Where to turn when dealer can't fix issue?
#1
Instructor
Thread Starter
Where to turn when dealer can't fix issue?
Hi All,
I posted a little about the issues with my 987.2 Cayman a few days ago. I wanted my Cayman's doors to automatically lock as I drove away, they previously never locked unless I locked them. So, I took them to my local dealer to have this done. The dealer made the software change and said I was good to go. However, the moment I unlocked my car it beeped twice. I thought nothing of it because I just figured that's what happens when you make the locking change. It took me a few days, with continual double beeping every time I pressed the lock/unlock button on the key fob, to realize that it wasn't locking at all. I took it back to the dealer the next day to have this process reversed in hopes that some glitch is causing my car not to lock. They tried to reverse it but for some reason it kept failing. They performed a brief lookover and weren't able to find any issue, great. Later that day, I realize that I can't get my fuel door open and the emergency release isn't working, great x2. So, I take it to another, larger, dealer in the area and they have spent a few hours looking through it and can't find anything that would cause this. I told them to keep looking at it but what do I do if they can't find anything?
Thanks
I posted a little about the issues with my 987.2 Cayman a few days ago. I wanted my Cayman's doors to automatically lock as I drove away, they previously never locked unless I locked them. So, I took them to my local dealer to have this done. The dealer made the software change and said I was good to go. However, the moment I unlocked my car it beeped twice. I thought nothing of it because I just figured that's what happens when you make the locking change. It took me a few days, with continual double beeping every time I pressed the lock/unlock button on the key fob, to realize that it wasn't locking at all. I took it back to the dealer the next day to have this process reversed in hopes that some glitch is causing my car not to lock. They tried to reverse it but for some reason it kept failing. They performed a brief lookover and weren't able to find any issue, great. Later that day, I realize that I can't get my fuel door open and the emergency release isn't working, great x2. So, I take it to another, larger, dealer in the area and they have spent a few hours looking through it and can't find anything that would cause this. I told them to keep looking at it but what do I do if they can't find anything?
Thanks
#2
Burning Brakes
Interesting scenario...... Having worked for an auto mfgr. many years ago, my ultimate recommendation was to take the car to another dealer for a fresh set of "eyes" on the problem. In your case, this step has already been made. Now, one has to question the skill level of the dealer(s) in finding the source of the problem. Since the lack of access to the fuel door creates a drivability problem, a call to Porsche may be in order. One would think that "erasing the "locking" software, wherever it is located, and reprogramming, would correct the issue. If the software is contained in a separate module, maybe the replacement of that part would allow fresh programming.
#3
Instructor
Thread Starter
They've already looked into all the software unfortunately. There are no fault codes but they're hunting down microswitches, currently swapping the doors with another Cayman that they have to try and pinpoint the problem.
#4
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Location: Waterloo, Ontario, Canada
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My 987.1 developed a similar issue when I took it to my local dealer for fixing another pre-existing issue on the car involving trunk lights not coming on. After the dealer attempted some diagnosis the first time, they failed to fix the trunk lights, but then the car stopped locking without a double press of the lock button (it honked twice like a door/trunk was open), and the footwell lights also stopped working.
Initially, the dealer was perplexed and denied anything they did could have broken it. However, later they put their best tech on it and they managed to fix it (free of charge too). He said he just erased and reprogrammed a number of ECUs. It fixed locking and all the light issues. It’s been working perfectly for 2 years since then.
Initially, the dealer was perplexed and denied anything they did could have broken it. However, later they put their best tech on it and they managed to fix it (free of charge too). He said he just erased and reprogrammed a number of ECUs. It fixed locking and all the light issues. It’s been working perfectly for 2 years since then.
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#8
Rennlist Member
Call PCNA (Porsche Cars North America) and get this situation on their radar. You may not need them as your advocate, but make them aware ASAP just in case.
It is perfectly possible to code a car incorrectly (even by a dealership) and there be no fault code. In fact, most incorrect coding will NOT throw a fault code... most of the time it will just render a system inoperable. I've never changed coding on my Porsche, but I've routinely re-coded modules on my other German cars. I've never had an issue. That's only because I'm SUPER scared of screwing things up, so I write down the long original coding every time I make a change just in case I have to change back to the original coding. It's easy to screw things up.
The original dealer needs to fix this. As mentioned in a previous post, the end solution may be for a dealer to erase the coding on affected modules, then re-code with original factory coding. Or maybe they'll need to replace the affected module and code the car to accept the new one. Either way, this should be on their dime. Their lack of skill and knowledge caused the issue in the first place.
It is perfectly possible to code a car incorrectly (even by a dealership) and there be no fault code. In fact, most incorrect coding will NOT throw a fault code... most of the time it will just render a system inoperable. I've never changed coding on my Porsche, but I've routinely re-coded modules on my other German cars. I've never had an issue. That's only because I'm SUPER scared of screwing things up, so I write down the long original coding every time I make a change just in case I have to change back to the original coding. It's easy to screw things up.
The original dealer needs to fix this. As mentioned in a previous post, the end solution may be for a dealer to erase the coding on affected modules, then re-code with original factory coding. Or maybe they'll need to replace the affected module and code the car to accept the new one. Either way, this should be on their dime. Their lack of skill and knowledge caused the issue in the first place.
#10
The vehicle needs a complete reload of the software base on the vin direct from Porsche. I had this on my 997 as a specialist had screwed a few things up like fuel gauge and so on. Fixed it
#12
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just think of how many times you could have pushed the lock button with the time spent on this. How does the saying go about the painter knowing when to put the brush down.
#13
Instructor
Thread Starter
Update: Still not diagnosed yet. They've replaced the passenger side door handle, check driver and passenger door wires, checking the wires for the fronk and trunk tomorrow. We're starting to think it's something with the DME/ECU. Replacement is looking like $3k... ouch. I don't know if the DME will be able to be repaired or needs complete replacement. Is there any way to completely reset the ECU and reflash it? PCNA said that the dealer won't be able to offer any possible assistance until the problem is diagnosed. Would an indy be able to replace the computer? What are my options here if it ends up being the computer?
#14
Drifting
If you get a durametric cable... it might just give you better analysis of what exactly is causing a fault rather than trusting dealers.
#15
Rennlist Member
Update: Still not diagnosed yet. They've replaced the passenger side door handle, check driver and passenger door wires, checking the wires for the fronk and trunk tomorrow. We're starting to think it's something with the DME/ECU. Replacement is looking like $3k... ouch. I don't know if the DME will be able to be repaired or needs complete replacement. Is there any way to completely reset the ECU and reflash it? PCNA said that the dealer won't be able to offer any possible assistance until the problem is diagnosed. Would an indy be able to replace the computer? What are my options here if it ends up being the computer?