A/C control panel failing
My a/c panel also intermittently is having a problem. On a couple of occasions, the panel failed to light up when the car was started. The first time this took place, the panel was unresponsive for about 30 seconds. The second time it happened it was unresponsive for about 10 seconds before coming to life.
I took the car to the dealer and they said there was a software upgrade that should fix the camera and that was done. They told me that they're baffled by the a/c control panel issue and MB didn't have any suggestions. There was a low voltage code, which they cleared, but they didn't do any type of repair. They didn't tell me what caused the low voltage code and I didn't think to ask. They probably didn't know or they'd have fixed that and thereby probably cured the problem. Anyway, they told me to keep and eye on it and let 'em know if the problem reoccurs.
If the panel continues to occasionally be slow to fire up, that's little more than a small inconvenience. But, if the the panel completely fails on, for example, an upcoming road trip, that's a real problem. I think I read on this board or elsewhere that someone had the same problem but I can't find the thread now.
Has anyone out there had this problem and, if so, what was the solution?
has never happened again, so i haven't told the dealer about it. it's one of those awful things that you can't show them because it eventually comes back on again
so if you take it to the dealer you will get the "could not replicate" answer from the tech and be sent home.
And if the panel fails completely somewhere down the road after the warranty expires, you may have an argument for MB to repair it on their nickel if records show it was acting up within the warranty.
Please do yourself and all of us who have this issue a favor by taking the car to the dealer.
I was in for a total Comand system shutdown on day 6 of ownership. The screen was black all day long and they took it in, looked at it the next day and it was back on. Nevertheless, they saw it the day before when it was not working and did a software update on it apparently. That didn't help w the AC issue though .
Haven't had any camera issues at all for 5 mo/3500 mi. That happened A LOT on my X164 . backup cam would not come on or be a bunch of crazy yellow lines.
In that particular case - the issue reappeared about 2 weeks later - and the 2nd stage was a climate control replacement - 2 days to get the unit in - and about a 3 hr shop time replacement/coding/programming.
Frankly, one out of 30-35 from my roof is not a "issue" - it's a exception - and frankly in internal malfunction of the sealed electronic control unit.
The sooner a owner brings his GL into service for this issue - and with the service protocol I have described both 1st and 2nd stage - the sooner you put the situation behind you and enjoy your GL more - and isn't that the point ?
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In that particular case - the issue reappeared about 2 weeks later - and the 2nd stage was a climate control replacement - 2 days to get the unit in - and about a 3 hr shop time replacement/coding/programming.
Frankly, one out of 30-35 from my roof is not a "issue" - it's a exception - and frankly in internal malfunction of the sealed electronic control unit.
The sooner a owner brings his GL into service for this issue - and with the service protocol I have described both 1st and 2nd stage - the sooner you put the situation behind you and enjoy your GL more - and isn't that the point ?
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And then I get a very, very nasty response.
And then I get a very, very nasty response.




