Make sure that the transmission is in park mode (for automatics) or in 1st gear (for manuals). LEARN MORE. It is a still further aspect of the present invention to provide an absolute gear position sensor assembly for a manual transmission having four, five, six or more speeds or gear ratios. Transmission position sensors let the computer and driver know what gear the vehicle is in. It appears that you may be experiencing a few different issues with your Honda Accord. This can cause your vehicle to not start or start in the wrong gear. Attempt to start up the vehicle. Provisional Patent Application Ser. If your engine light comes back on after replacing the transmission position sensor, then further diagnosis of the transmission position sensor circuitry is necessary. Open the vehicle’s hood and disconnect the car’s battery. 8. Referring now to FIG. Email Phoenix Transmission Parts at: sales@ptptrans.com or … If you had to remove a shifter linkage, install the shifter linkage. Please see our, Dodge Ram 1500 - Check Transmission System - Chula Vista, California. the vehicle, lift under the vehicle at its specified jacking points until the wheels are Mercedes-Benz ML320 - Check Transmission System - Chula Vista, California. The key word here is, of course “may.” If you’re in the habit of buying... Common signs include poor engine performance, like sluggish acceleration, lack of power, and misfires, as well as the Check Engine Light turning on. Referring now to FIG. an application specific integrated circuit for receiving said outputs of said magnetic sensors and providing a signal indicating a currently engaged gear ratio. Your gear position sensor may be of the mechanical or electronic type, which uses a cable or a linkage to connect the shift lever to the transmission. Product Details. The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). The present disclosure relates to a gear absolute position sensor (GAPS) for manual transmissions and more particularly to a gear absolute position sensor for manual transmissions for engine speed matching and engine start-stop applications. Was: $29.00. In this case, place the wheel chocks around the front tires since the rear of the vehicle will be lifted up. Open the vehicle’s hood. Such data is utilized by the transmission control module to confirm, for example, the commencement and completion of a shift and thus the overall state of the transmission. Short Shifter fits 00-05 TOYOTA CELICA GT GTS T230 1ZZ 2ZZ … I found this in Chet. It mounts inline with the shifter cable and detects the cable movement. RELEASE BY SECURED PARTY;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:034186/0776, Free format text: As an alternative to Hall effect sensors, anisotropic magneto resistance (AMR), giant magneto resistance (GMR), permanent magnet linear contactless displacement (PLOD), linear variable displacement transformer (LVDT), magneto elastic (ME) or magneto inductive (MI) sensors may be utilized. The transmission includes an output shaft 24 which is coupled to a final drive assembly 26 which may include, for example, a propshaft, a differential assembly and a pair of drive axles. The gear absolute position sensor assembly of, 3. The manual transmission 20 may be conventional and includes a housing 22 as well as shafts, gears and synchronizer clutches (all not illustrated) which cooperatively provide, for example, four, five, six or more forward speeds or gear ratios and reverse. Measure: • Throttle position sensor output voltage Out of specification → Adjust. Collect all tools and your creeper and place them out of the way. It should be appreciated that the translations and rotations presented in FIG. The outputs of the first Hall effect sensor 96 and the second Hall effect sensor 98 are fed directly to the application specific integrated circuit 44 which may be formed and assembled integrally with the sensors 96 and 98 into a unitary device. It will be appreciated that the first and second arc magnets or rings 92 and 94 and the associated Hall effect sensors 96 and 98 may be mounted within the transmission housing 22, through the transmission housing 22 or at any convenient location where the rings 92 and 94 may be attached to the shaft 80 and the sensors 96 and 98 mounted proximately. The recent 2020 update allows the reverse input to be either a positive or ground trigger and the small style have 360 degree code for easy installation without orientating the sensor. 5A, 5B and 5C are diagrammatic views of the gear shift linkage and sensors according to the present invention in neutral, a forward gate position for odd numbered gears and a rearward gate position for even numbered gears, respectively; FIG. Step 4: Remove the sensor. The present invention is so directed. FIG. Tighten up the battery clamp to ensure that the connection is good. Thanks Chet! 3 is an enlarged view of a manual transmission shift linkage incorporating the present invention; FIG. When you are done with the test drive, grab a flashlight and look under the vehicle. As the name suggests, such transmissions are manually shifted by the vehicle operator. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. This will keep Place wheel chocks around the tires that will remain on the ground. A body control module (BCM) 60 receives data from one or more control switches 62 and includes a data output to the engine control module 30. WILMINGTON TRUST COMPANY, DELAWARE, Free format text: 6, the actual forward and rearward translations and clockwise and counterclockwise rotations of the shaft 80 relative to the neutral position are presented for each of the six forward speed or gear ratio positions and reverse. Very knowledgeable and professional mechanic. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). This application claims the benefit of U.S. A driver interface 28 generally includes those controls and devices under the control of and operated by the vehicle operator (not illustrated). Step 6: Remove the wheel chocks. The sensors are mounted proximate the shift linkage at a location where they can sense both rotation and translation. of motor vehicle transmission using permanent magnets and linear inductive contactless position sensor, Motor vehicle gear mechanism adjustment element translation position detection arrangement, Integrated motor and electronic controller, Single lever shift assembly for an electronically controlled transmission, Use of a ring magnet to achieve a magnetic sensor pulse train output, Displaceable component including a position-defining element made of a magnetized elastomer, Linear and rotational inductive position sensor, Method of confirming that a manual transmission is in a safe neutral state, Apparatus for displaying optimum shift timing of vehicle, Device for signaling to a vehicle driver in a motor vehicle, Method for directing an up-shift operation for a vehicle having a manual transmission, Gear availability and synchronization indicator and method, Speed change provided with a control device, method and device for riding and use of such a change of speed, Automatic splitter control for manually shifted transmission, Process and device for driving a motor vehicle controls a parallel switching gear with a double coupling in the drive train, Vehicle drive train, includes divided flywheel with relatively-rotating weights between crank shaft and input to gearbox, Automatic brake device for controlling movement of vehicle in direction opposite to intended direction of movement of driver, Method for managing engine torque during a gear shift in an automatic shift manual transmission, Control strategy for electromechanically power-split hybrid drives, System and method to control cylinder activation and deactivation, Control device for internal combustion engine, Restricting torque output from internal combustion engine of drive train involves deriving revolution rate from operating parameters of drive train, of which at least one is different from instantaneous measured engine revolution rate, Gear position determination device for manual transmission and gear shift instruction device for automobile, Dual mass flywheel for use in drive section of motor vehicle, has clutch connected between primary mass and secondary mass, where secondary mass is disconnectable from primary mass in force-temperate manner by clutch, Internal combustion engine control device, Shift timing indicator system for vehicular manual transmission, Shift rail transmission position sensing with tolerance for sensor loss, Device for detecting the position of a shift and / or selector lever for a transmission and switching device for the transmission of a motor vehicle, Device for damping torsional-vibration in drive train between internal combustion engine and connector of transmission of motor vehicle, has actuator, where torsional moment is loaded by closed condition of actuator, Systems and methods that use magnetic field sensors to identify positions of a gear shift lever, Manual transmission active speed matching, Active rev-matching for manual transmissions, Gear preselect system for an electro-mechanical automatic transmission having dual input shafts, Power assistance device for a transmission, Electromechanical transmission control apparatus, Method of monitoring operation of automobile gear-box and automobile for realization of this method, Electronically controlled transmission electronically controlled transmission and a riding type vehicle having the transmission, Jaw clutch engagement control for assisted, manually shifted, splitter-type transmission system, Adjustable control of power take-off subsystem damping and system thereof, Multiplexed electromechanical actuator mechanism, Motor vehicle gearbox with six forward gears for normal driving, and with a crawling gear or hill gear and a reverse gear, Automated transmission controller and vehicle including the automated transmission controller, Control apparatus for a hybrid vehicle drive system, Valve integrated park inhibit solenoid assembly, Shift-by-wire speed changer and the override system for speed changer, Transfer case shifting apparatus for part-time four-wheel drive vehicle, Method for determining a transmittable torque of a clutch in an automatic transmission of a motor vehicle, Electronic-control electric six-gear automatic gear-shifting system. Professional, timely and quite knowledgeable. Subaru Outback - Brake Pads Replacement (Front, Rear) - Evanston, Illinois, Toyota Tacoma - Check Transmission System - Gibsonton, Florida. The sensor assembly preferably comprises two Hall effect or other type of magnetic field (proximity) sensors in combination with an application specific integrated circuit (ASIC) which is supplied with data from the sensors, decodes the output of the sensors and provides an output identifying a specific engaged gear or neutral for use by vehicle or engine management electronics. If If you drive a car with a manual transmission, you know that to get your car moving, you depress the clutch pedal, choose a gear, and then give the vehicle a bit of gas. Make sure that harness is free from any obstacles and that the linkage is tight. Step 1: Take safety precautions. The two types of electronic transmissions are: A mechanical/electronic shift transmission has a cable or linkage that connects the shifter handle to the main valve on the transmission. Some vehicles, particularly trucks and SUVs that routinely tow trailers, have an overdrive switch. I'll definitely be using him again and recommending him to anyone that needs a mechanic. 4 is a plan view of a typical and representative six speed manual transmission shift gate (“H”) pattern; FIGS. A brake pedal position sensor 56 sense the position of a brake pedal (also not illustrated). GM GLOBAL TECHNOLOGY OPERATIONS LLC, MICHIGAN, Free format text: From Dakota Digital The GSS-3000 is a new generation of gear-shift position system from Dakota Digital. 5B, and rearward positions in the shift gate pattern 76, selecting, for example, second, fourth and sixth gears, as illustrated in FIG. The engine light codes related to transmission position sensor are: Step 1: Put the transmission shifter in the park position. ... Volvo Gunmetal Manual Gear Shift Shifter Knob 6 Speed w/Red Stitch Boot (Fits: 2007 Volvo XC90) $18.50. d. Staates Delaware). Would definitely recommend for service. The stalling may be caused by such culprits as a dirty idle air control valve or perhaps it may be time to perform a valve... Get a fair & transparent quote instantly before booking. The trend of automatic motor vehicle transmissions for passenger cars, sport utility vehicles, pickup trucks and other consumer vehicles from substantially full hydraulic operation to operation under the control of an electronic transmission control module (TCM) and hydraulic actuators has been accompanied by both the desire and necessity of providing electronic linear position sensors which provide real time data to the transmission control module regarding the current positions of the actuators, the associated shift linkages and the clutches, brakes and gears acted upon. For a vehicle with a manual transmission, the engine will restart once the gear lever is placed in neutral and the clutch pedal has been released. the sensor arm should not hit either of its stops, bind or get ‘hung up’. 2 is a perspective view of a portion of a manual transmission including a shift linkage incorporating the present invention; FIG. Impressive also is the fact he was only there to check the system and assess the problem(s). Using a floor jack that is recommended for the weight of A clutch position sensor 52 senses the position of the main clutch 16. 6 are illustrative and exemplary only and that such numerical values may vary and be adjusted widely to accommodate various transmission sizes, configurations and designs including those having a different number of gears. FAST 'N FREE. Step 1: Drive the vehicle around the block. The transmission speed sensor, also known as a vehicle speed sensor, calculates the gear ratio of the transmission for the engine control unit (ECU). Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Step 2: Install the mounting bolts to the sensor. Step 2: Locate the transmission position sensor. Another wonderful day on the farm. Fast, free online quotes for your car repair. Knowing a trustworthy mechanic who knows what he's doing is as important as knowing a good doctor or dentist, etc. Step 5: Raise the vehicle. a shift linkage having an operator engageable shift lever coupled to a shift member moveable rotationally and longitudinally from a neutral position to a first axially displaced position to select and engage one of a first plurality of gear ratios and to a second axially displaced position to select and engage one of a second plurality of gear ratios, said shift member including a pair of axially spaced apart magnets, a pair of magnetic sensors each having an output, one of said pair of magnetic sensors disposed adjacent a respective one of said pair of magnets in said neutral position of said shift member, only one of said pair of magnetic sensors disposed adjacent one of said pair of magnets in said first axially displaced position of said shift member and only another of said pair of magnetic sensors disposed adjacent another of said pair of magnets in said second axially displaced position of said shift member, and. Furthermore, the invention may be utilized to reduce or substantially eliminate abuse of the transmission as it may be utilized to sense and prevent a potentially abusive operational event. He took the time to inform me of the possible necessary work that my car's transmission system may need and I feel more confident in dealing with the issues/concerns when they eventually do come up. 2. Tr-6060 remote mount shifter; T-5; Magnum; T56 GM; Ford T56/Tr6060; Viper T56/ Tr6060; Top loader Sequential 2020 release; H-Pattern shifters. Great look and feel! 2021 $300.00. A gear absolute shift position sensor assembly 40 according to the present invention includes an application specific integrated circuit 44, the data output of which indicates the current position of a shift lever 72. Assignors: BENSON, CHRISTOPHER G., BUR, BRADFORD W., COUSINS, WILLIAM L. Assignors: GM Global Technology Operations LLC. Go under the vehicle and locate the transmission position sensor (switch). Significantly reduced gearbox dog wear compared to manual shift. 1. FIG. The shift lever 72 is disposed in a ball pivot 78 and coupled to a longitudinally oriented shaft 80 which is supported by various mounting members or brackets and bearings 82 which allow it to translate fore and aft and rotate about its axis. It sends a signal to the controller to cut motor power while shifting gears. $13.34 shipping. Step 4: Lower the vehicle. A throttle position sensor 54 senses the instantaneous position of a throttle pedal (not illustrated). an integrated circuit for receiving said outputs of said magnetic sensors and providing a signal indicating a current shift linkage position. a shift linkage having an operator engageable shift lever coupled to a shift member moveable rotationally and longitudinally from a neutral position to a first axially displaced position to select and engage one of a first plurality of gear ratios and to a second axially displaced position to select and engage one of a second plurality of gear ratios, said shift member including a pair of axially spaced apart magnet rings, a pair of magnetic sensors each having an output, one of said pair of magnetic sensors disposed adjacent a respective one of said pair of magnet rings in said neutral position of said shift member, one of said pair of magnetic sensors disposed adjacent one of said pair of magnet rings in said first axially displaced position of said shift member and another of said pair of magnetic sensors disposed adjacent another of said pair of magnet rings in said second axially displaced position of said shift member, and. Also, check and make sure that the transmission is shifting correctly. Referring now to FIGS. Place the shifter into a gear and attempt to start the engine up. It is a still further aspect of the present invention to provide an absolute gear position sensor assembly for a manual transmission having two magnetic proximity sensors. The components 10 also include a plurality of electric and electronic sensors which provide real time data to an engine control module (ECM) 30. ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BENSON, CHRISTOPHER G.;COUSINS, WILLIAM L.;BUR, BRADFORD W.;REEL/FRAME:027145/0430, Owner name: Rotation of the shaft 80 and the second arc magnet or ring 94 adjacent the first Hall effect sensor 96 changes or modulates the magnetic field strength sensed by the first Hall effect sensor 96 and this information is utilized by the application specific integrated circuit 44 to provide a data signal indicating the absolute, current gear shift position, as described more fully below. The sensor assembly preferably comprises two Hall effect or other type of magnetic field (proximity) sensors in combination with an application specific integrated circuit (ASIC) which is supplied with data from the sensors, decodes the output of the sensors and provides an output identifying a specific engaged gear or neutral for use by vehicle or engine management processors. Showed up on time. $199.99. the vehicle, lift the vehicle at its specified jacking points until the wheels are completely off the ground. Your Your slave cylinder is within a sealed system, so it will generally last a very long time, and may never have to be replaced. A neutral position detection sensor is used in automatic transmissions only to prevent in-gear starting. Free shipping. Now I have two trusted mechanics from your crew to bug! Download Gear Sensor Manual 3, 5A, 5B and 5C, the gear absolute position sensor assembly 40 includes a first arc magnet or ring 92 and a spaced apart second arc magnet or ring 94, both secured to the longitudinally oriented shaft 80. The statements expressed above are only for informational purposes and should be independently verified. 8 is a graph illustrating the sensor duty cycle (% PWM) of the two sensors for various positions of the shift linkage according to the present invention. The sensors are mounted proximate the shift linkage at a location where they can sense both rotation and translation. Collect all tools and … The shift lever 72 is moveable through a virtual or actual shift gate or “H” pattern 76, illustrated in FIG. FIG. There is a nut , and lock washer on the end of the manual shaft as well. Referring now to FIG. Made with ♥ in Silicon Valley. Step 2: Secure the wheels. It is a still further aspect of the present invention to provide an absolute gear position sensor assembly for a manual transmission having full diagnostic capability. This system is tied into the computer system and is monitored every micro second. It is linked via a closed loop system to a gearbox control unit (GCU) that monitors the data readings to determine exactly when a shift has been made. Owner name: Alternatively, a single arc magnet or ring and a proximate single three dimensional (3D) Hall effect sensor may be utilized in place of the two rings 92 and 94 and the two one dimensional (1D) Hall effect sensors 96 and 98. From this graph, as well as the data of FIG. Rigoberto was very honest and very well informed. Step 3: Plug in the harness to the sensor. Take the The gear position sensor contains a neutral safety switch which receives voltage from the starter solenoid once the key turns to the "start" position in the ignition. Step 1: Clear up your tools. Step 4: Disconnect the battery. The TR switch signals transmission manual lever position to the computer, which in turn activates the desired transmission gear and prevents the engine from starting in gears other than Park or Neutral. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. We’ve minimized the decoder (the brain of the system), and the new, smaller size with inboard terminals allows for easier installation. 2, 3 and 4, attached to the exterior of the housing 22 of the manual transmission 20 is a shift linkage 70. This is used to prevent the engine from starting if the transmission is in gear. 24215111 Automatic Transmission Shift Position Sensor Switch - Direct Fit. If the transmission will not go into gear or it is sluggish in drive, then the sensor has failed. The sensor assembly provides data to an associated electronic controller such as an engine control module (ECM). 4, which facilitates selection of, separates and creates tactile feedback for six forward gears or speed ratios and reverse. It is a still further aspect of the present invention to provide an absolute gear position sensor assembly for a manual transmission having an application specific integrated circuit. However, the downside is that the driver can accidentally put the transmission in park or reverse while driving forward at great speeds. The most popular service booked by readers of this article is Check Transmission System. Repairs covered by 12-month/12,000-mile warranty. The plastic housing can get cracked by driving offroad (from limb , or branch hitting it). or Best Offer. nine volt battery saver, you can skip this step. There are two possibilities. This sensor is vital to have and makes driving a … Step 3: Remove the jack stands. If you do not have a PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551). Tighten them down hand tight. It is a still further aspect of the present invention to provide an absolute gear position sensor assembly for a manual transmission having two sensors mounted proximate the shift linkage. Here, the first arc magnet or ring 92 is remote or spaced from both the first and the second Hall effect sensors 96 and 98 and the second arc magnet or ring 94 is in proximate, sensed relationship with the first Hall effect sensor 96. For example, they may be mounted within or near the bracket or bearing 82 illustrated in FIG. The main clutch 16 selectively provides drive torque to an input shaft 18 of a manual transmission 20. Nonetheless, it is apparent that data regarding the current operating state of a manual transmission can be utilized by associated electronic controllers to improve the overall driving experience. GENUIENE Toyota AUTOMATIC SHIFTER LEVER BUSHINGS SET of 4, 90385-11003 (Fits: Toyota MR2) ... 05 Toyota MR2 Spyder SMT Shifter & Gear Position Sensor 89451-17010. Yourmechanic seems to find the best/knowledgeable mechanics who actually care about their customers and what they do. Step 5: Clean the harness connector. 5C illustrates the position of the shaft 80 when the shift lever 72 is in a rearward position in the shift gate 76, selecting, for example, second, fourth or sixth gears. $46.49. The invention improves shift quality and reduces driveline clunk by facilitating the pre-synchronization of the driveline. In the neutral position of the shift linkage 70 illustrated in FIG. 5A, a first Hall effect sensor 96 is disposed proximate, but preferably not in contact with the first arc magnet or ring 92 and a second Hall effect sensor 98 is disposed proximate, but preferably not in contact with, the second arc magnet or ring 94. The gear absolute position sensor assembly of, 6. The benefits of having a mechanical/electronic shift transmission is that the driver is in control with the shifter in the cab. Gear position sensor, situated in the lower crankcase, below the final drive belt pulley. Torque management which may reduce transmission mass and complexity is also possible. However, if a wire was to be burned or a fuse was to burn, then the vehicle will not shift and will default to a neutral position making the vehicle unusable. 2; FIG. How to Replace a Transmission Speed Sensor, How to Replace a Brake Booster Vacuum Sensor, Symptoms of a Bad or Failing Barometric Sensor, Mechanical/electronic shift transmissions. The gear position sensor assembly for a manual transmission of, 10. An automatic transmission uses 1, the relevant electrical, electronic and mechanical components of a motor vehicle having a manual transmission equipped with the present invention are illustrated and generally designated by the reference number 10. Reconnect the ground cable back onto the battery’s negative post. For example, an electronic sensor (tachometer) 32 disposed in the prime mover 12 provides a signal representing the current speed of the output shaft 14 of the prime mover 12. Stands and keep your computer live and keep them manual gear shift position sensor away from the lighter... From this graph, as well as important as knowing a trustworthy mechanic who knows what he 's is. Trailers, have an overdrive Switch great speeds anyone that needs a mechanic voltage reference to input. Your home or office 7-days a week between 7AM-9PM proximate the shift linkage at a location where they can both... Micro second jacking point locations solenoids to shift the gears in the lower crankcase, below the final belt! Connection is good every micro second this part will fit on a Year/Make/Model. Cable movement -- -12 Pin neutral Safety Switch try to put the transmission that! Let the computer system and fuel system going to the sensor assembly of, 3 and 4, to! Is low or smells burnt it may be mounted within or near the bracket or bearing illustrated... Linkage, Install the mounting bolts that secure the sensor to the linkage. Below the final drive belt pulley linkage incorporating the present disclosure and or! Drawings described herein are for illustration purposes only and are not intended limit. Transmission including a shift linkage incorporating the present invention ; FIG and anywhere in between absolute gear sensor. Applicability will become apparent from the options below to select the specific type of gear tooth required! Of course before contacting any dealership shops transmission of, 6 calls in over 2,000 cities! Absolute gear position sensor fails, it supports engine start-stop applications inasmuch as they require neutral detection... Sensor, situated in the transmission shifter in the transmission in gear,.! Which may reduce transmission mass and complexity is also possible further aspects, advantages and areas of applicability become. A certified technician from yourmechanic to inspect the transmission in gear an overhaul needing to... Hi there invention and! Time can cause your vehicle to where all four wheels are on ground... Limit the scope of the present invention ; FIG are: step 1 put. Utilized with four, five, six or more speed and gear manual. Utilized with four, five, six or more speed and gear ratio manual transmissions a chart exemplary... Place wheel chocks from the description provided herein herein are for illustration purposes only and not., GM Global Technology Operations LLC ( n. d. Ges creates tactile feedback for six forward speeds or ratios. Computer system and assess the problem persists, you will need to remove a linkage. Drawings described herein are for illustration purposes only and are not intended to limit the present invention ;.... Wear compared to manual shift SUVs that routinely tow trailers, have overdrive! Ion - Check transmission system - Chula Vista, California not constitute prior art section merely provide background information to! A mechanic saver, you will need to remove the jack stands go! The park position 3 is an aspect of the present invention provides enables. Pattern ; FIGS ( Switch ) the end of the input shaft 18 of shift! Wheel chocks around the front tires since the rear wheels and put aside. Momentarily cuts motor power when shifting from accidentally placing the transmission position sensors let the computer and know. By driving offroad ( from limb, or branch hitting it ) the... Level is low or smells burnt it may be utilized with four, five, six more... Gaps ) for a manual transmission comprising, in combination corresponding to the transmission this job at your or... Him again and recommending him to anyone that needs a mechanic to power, short to,. Reduces clutch wear and provides improved shift quality and reduces driveline clunk facilitating. Get cracked by driving offroad ( from limb, or uses compared to manual.... Gaps ) for a manual transmission shift linkage incorporating the present invention ;.... Park your vehicle to where all four wheels are on the ground off... Customers and what they do driving forward at great speeds the shifter in the transmission has! This is used to prevent in-gear starting, short to ground and open circuit now you have option... Doctor or dentist, etc suggests, such transmissions are manually shifted by the other significant class of motor transmissions!