4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWon't re-start when hot
Leading reported evidence
Replace tcm (trans control module)
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
Audi replaced the TCM (trans control module) which is a known problem on these cars.
Leading evidence: 'Replace tcm (trans control module)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'quattro (tcm fault) trying' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Repair they eventually perform' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that suspect a cause
1
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Suspected cause
This was probably the quattro (TCM fault) trying to figure out where it was.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion
Bottom line, whatever repair they eventually perform, it might be worth having them check that mechanical stop for damage.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion
The kicker is they also had to replace the solenoid that prevents the car from coming out of P at the wrong time.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
When it's been run for a while and is hot, it cannot be restarted normally, after being turned off.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T042512Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have a year 2000 C4 tiptronic. When it's been run for a while and is hot, it cannot be restarted normally, after being turned off. The solution is to force the transmission out of Park to Neutral (and it does require some force). In Neutral it will start. My Porsche service people have not been able to fix this, probably because it's hard to replicate. Has anyone seen this problem, so that can give the Porsche service people a pointer?
I don't know if this is your problem... but, there is a sensor for the ATF cooler that can shutdown the Tiptronic program if it senses the transmission ATF is too hot. If this sensor were defective (or if your ATF is really too hot) I think it will shutdown the Tiptronic drive program and may not allow re-starts. Has your dealer done a PST2 fault readout on the transmission?
It sounds like the PnP switch to me. There is a switch on the transmission that prevents the vehicle from being started while in any gear but N or P. It sounds like once the the switch gets hot the contacts do not close in the P position, but they do close in the N position. Which would make sense, because P is used more frequently than N and they are probably more worn. Just my $.02
I may get in trouble here implying any semblance to an Audi but my girlfriend had a similar problem on her '02 Allroad. The car wouldn't start so she called the dealer and the service guy told her to force it out of P and into N. The car started in N but she reported it ran rough until she got it to the dealer. This was probably the quattro (TCM fault) trying to figure out where it was.
Audi replaced the TCM (trans control module) which is a known problem on these cars. The kicker is they also had to replace the solenoid that prevents the car from coming out of P at the wrong time. They claimed a "voltage spike" from the TCM that caused the solenoid to fail. I don't believe a digital device (TCM) can take out a solenoid (big fat wires). I believe the solenoid/lock-out mechanism was damaged from when she followed instructions to pull (hard!) out of P.
So, based on my theory, I'd first check if that locking mechanism is operating smoothly when cold or hot. Try, ignition on, foot on brake, then it should go from P-N? If that is so, then see if that solenoid is getting the proper signals from whatever the equivalent computer is in the P-car.
Bottom line, whatever repair they eventually perform, it might be worth having them check that mechanical stop for damage.
Good luck,
Andy, C4S waiter(!)
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