Is this in a Tiguan ??

 

For some reason, I think this was reported a while ago as being a bug in the control module firmware.

 

For some reason, I think this was reported a while ago as being a bug in the control module firmware.

Thanks - i'll mention it to VW at my next service. Do you think a firmware update will resolve this? Do VW do this sort of thing? I would have thought that they check and update firmware modules as a matter of course during a routine service.

 

If it's a known problem and if there is a firmware update, then yes it could fix it. How's that for a definite maybe? And NO, dealers don't just look for updates for your vehicle. That costs tech time and who pays if there is nothing to update? They should check, but they don't.

 

Heh - one would think that it just happens automatically when they jack the car into the CANBUS for the regular checkups. So much for that

I believe Tesla are doing firmware updates over the air now - remotely. I'm not sure i'm too keen on that idea - imagine getting a bum update and you can't go anywhere.

 

We got into flashing OEM updates almost a year ago and let me tell you it is a regular 3 -ring circus out there. If you go to the dealer with a specific complaint and there is a TSB that is covered under warranty, and there is an update, you will get it, if it is meant for your specific vehicle. Example: GM had an update that improved fuel economy on a certain model. Unless the customer complained about it, it was not distributed. That said, there are a lot of failsafes in place to make sure a flash does not brick the car. i applaud Tesla in making them automatic and over the web. No trips to the dealer, always updated. Having a car with the latest calibration would make my job a whole lot easier. Whenever we get a car in with a problem that sounds weird, I have to go on a treasure hunt for TSBs to see if there is one to fix the issue before replacing parts.

 

I have to go on a treasure hunt for TSBs to see if there is one to fix the issue before replacing parts.

And all unbillable time. :|

 

I had a similar problem on my 2012 Passat SE with manual AC: sometimes when driving with heater on, it would get hot, so I'd dial it down but it wouldn't change, could change any setting I liked, only the fan could be changed. If I stopped the car and the engine went into blue stop, the heating would suddenly wake up. My guess was it's all digital with control valves, and the computer simply forgot to look at the low priority heating controls.

Had a firmware update at first service (Dec 2013) which fixed it, never had it again. So my bet is you're due a software update also.

Richard

 

I'll ask them to update everything - lets see what they say