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This fuse also powers , transmission control switch , DRL module , back up lights switch , digital transmission range sensor and the pulse vacuum hublock solenoid .
DRL module is daytime running lamp module . look at the transmission range sensor . Disconnect thing's one at a time till fuse no longer blows or disconnect everything an then replace fuse the connect thing's one at a time till it blows , then you found your problem circuit .
The TRS is a speed sensor located in the valved body, attached to the transaxle. It has a connector on one side, and the other side is a bolt holding it to the transaxle, and a rod plugged into the valve body. The transmission range sensor is located within the transaxle.To replace it or to check if the part fits you need to take apart the oil pan and valve body.
Here summary procedure:
Take off the battery negative cable. Bleed oil. Remove air cleaner assembly. Put lever in first gear. Disconnect the gear shift cable from lever. Remove the manual valve lever from the shaft. Disconnect the cable from TRS connector. Raise vehicle on hoist. Remove all the transmission oil pan bolts Take off the transmission oil pan . Remove the transmission oil filter Undo the valve body-to-transaxle case bolts. Remove the park rods from the guide bracket and pull off the valve body from transaxle. Put the valve body on a work bench Undo the t-25 torx screw holding the TRS. Do operations in reverse order, when refitting torque the valve body bolts to 105 in lbs.
code p 0864 refers to transmission control module(TCM) communication circuit --range / performance problem===causes --wiring---poor connections ---TCM
always check the wiring and connections first then replace the TCM
The transmission range sensor aka neutral safety switch is located underneath the air filter on top of the transaxle and very easy to access. Replace this part (around $50) and it will solve your problem.
What happens is this, when your tranny warms up, it disperses heat to the sensor switch and if its faulty or worn out, will send faulty relays to the transmissiom computer module (TCM) and makes the transmission shift irratically (OD to 3rd and back while driving at freeway speeds). You tranny is not overheating like most people believe, its the switch. Mechanics are telling alot of people that their tranny needs replaced. Watch Out For These People!! They only want your money!!
first are you getting any volt to the coil? if you getting volt to the coil and the coil is good 99% of the time it will be you sensor. the crank sensor sense the rotation of you flywheel and send the single to your computer than the computer dispurse the charge to the coil. you can check by taking the volt meter attaching plug. 1st unplug your main coil wire so you dont get shock. plug in your volt meter to the sensor through the connectors and. once it quit it quits. hope that help some turn the motor over and see you getting any reading. If I remember correctly VW has two sensor, one for the fuel and one for the ignition sparks. if you have high mile I would go ahead replace them both, soon or later they will fail and will leave you stranded
the automatic transmission fluid must be checked by a VW dealer. there is no dipstick. the transmission fluid must be moitored b y a scan tool at a certain temp. If the incorrect fluid is added, transmission failure may occur. Recommend a good VW dealer for this issue.