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Wolfgang, VW Master Technician
Category: VW
Satisfied Customers: 4525
Experience:  Senior VW Master Tech 15 yrs
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I have a 2003 Volkswagen Passat V6 with a Triptronic

Customer Question

I have a 2003 Volkswagen Passat V6 with a Triptronic Automatic Transmission. When I bought the car it had a bad transmission so I had it replaced with one from the salvage yard. The car drives fine and the transmission works good most of the time. Sometimes after starting the car and putting it in D or R it jerks hard and all blocks in the instrument cluster light up (PRD321). If I immediately switch the car off and start it up again the lights go out and it will shift properly in all gears with no jerk. Sometimes no blocks light up and it will only shift into 1st even thought the lever is in the D position. I've replaced the TCU and I've used my VCDS software to set the basic settings 60 and kickdown 63. Where do I need to proceed next? Any help would be appreciated.
Submitted: 1 year ago.
Category: VW
Expert:  Wolfgang replied 1 year ago.

Thanks for choosing Just Answer . I'm Wolfgang here to help!!
Below is my first answer or request for more information. If you do not understand it, or you need more information from me, or need me to go in more detail. Do not rate yet, just reply. Put yourself in my shoes, I can not see, smell, hear, feel or touch your car, nor do I know any history on it. So take into consideration I am doing my best based on what you tell me. Also understand fixing cars often requires sophisticated tools, that you may not own. So even if you can not do what is outlined in my answer, that does not mean my answer is wrong deserving to be rated negative.

what faults were stored in the tcm please? thanks

Customer: replied 1 year ago.
Incorrect gear ratio - 1
Incorrect gear ratio - 4I believe this is correct. I don't have the data right in front of me.
Expert:  Wolfgang replied 1 year ago.

internal slippage of the clutch "A" , electric valve sticking mechanically, or the mechanical valve in the valve body sticking.

attached is a good reference of what clutches and brakes are engaged in each gear and the location of the solenoids of the valve body for each particular gear.

anything else?

if not.....

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Customer: replied 1 year ago.
Is there anything that I can do to try to repair this problem? Besides removing the transmission and replacing it with another one?
Expert:  Wolfgang replied 1 year ago.

you can try to remove the valve body and take it apart , clean and reinstall with new fluid and may be ok

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