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11 Posts
Hi all! Hoping someone can shed some light on a couple of issues my A5 has developed (sport coupe, 2.7 TDi V6 on an ‘09 plate).
Few weeks back, after the heavy snow that swept the country, and after the car had been sat under it for a week or so unused I looked out the kitchen window and I noticed the DRL’s were on, even though the car was locked up and the lights are usually left on Auto on the switch. Went out and checked to make sure, and the switch was on Auto as normal, but the lights on warning sounded when I opened the door. Switched the switch to Off and the warning alarm stopped but I noticed that now the lights are always on when the ignition is on, coming home DRL function etc doesn’t work now, and the switch does nothing regardless of where it’s set 😂🤷🏻 main beams flash off the stalk as normal, and there is a ‘Malfunction- vehicle lights’ warning coming up on the dash.
Other issue, my wipers have completely stopped working. Stalk does nothing at all except washers, and headlight washers which are fine. The trip meter button works also. The motor isn’t seized as I can manually push the wiper arms through their full range. Service mode does nothing either…switch it on in the MMI and it cycles back to off after a couple of seconds and the wiper arm position doesn’t change. Not getting a wipers malfunction message or anything…just went from working fine to not at all without any warning whatsoever. Both the lights issue and the wipers malfunctioning seemed to occur pretty much simultaneously, so might have a common root cause maybe? 🤷🏻
I’ve googled extensively and the only thing I found that replicated both problems happening within days of each other, as mine did was in a VCDS support forum, which was apparently body control module related, would that be the one under the dash or the one in the boot? And would that module control power to both these circuits? I’ve done all the usual fuse checks etc and all test fine when belled out with a multimeter and visually look ok and free from corrosion. Similarly, I’ve checked the plug connectors on the light switch and the wiper motor and both look fine.
Lastly, on cold start the whole car shakes like a 1970’s tractor for about 15 seconds 😂 then it ticks over like the well made German car it’s meant to be 🤨😂 Normal on this engine or cause for concern? Runs perfectly well mannered after the initial tremors.
Any suggestions on any of that? I have VCDS Lite, but it won’t talk to my car because it’s CAN BUS, so I can’t pull any diagnostics up 🙄 normal cheap OBD reader says there are no generic codes stored to read.
All answers gratefully recieved…I’m at the end of my tether!
Few weeks back, after the heavy snow that swept the country, and after the car had been sat under it for a week or so unused I looked out the kitchen window and I noticed the DRL’s were on, even though the car was locked up and the lights are usually left on Auto on the switch. Went out and checked to make sure, and the switch was on Auto as normal, but the lights on warning sounded when I opened the door. Switched the switch to Off and the warning alarm stopped but I noticed that now the lights are always on when the ignition is on, coming home DRL function etc doesn’t work now, and the switch does nothing regardless of where it’s set 😂🤷🏻 main beams flash off the stalk as normal, and there is a ‘Malfunction- vehicle lights’ warning coming up on the dash.
Other issue, my wipers have completely stopped working. Stalk does nothing at all except washers, and headlight washers which are fine. The trip meter button works also. The motor isn’t seized as I can manually push the wiper arms through their full range. Service mode does nothing either…switch it on in the MMI and it cycles back to off after a couple of seconds and the wiper arm position doesn’t change. Not getting a wipers malfunction message or anything…just went from working fine to not at all without any warning whatsoever. Both the lights issue and the wipers malfunctioning seemed to occur pretty much simultaneously, so might have a common root cause maybe? 🤷🏻
I’ve googled extensively and the only thing I found that replicated both problems happening within days of each other, as mine did was in a VCDS support forum, which was apparently body control module related, would that be the one under the dash or the one in the boot? And would that module control power to both these circuits? I’ve done all the usual fuse checks etc and all test fine when belled out with a multimeter and visually look ok and free from corrosion. Similarly, I’ve checked the plug connectors on the light switch and the wiper motor and both look fine.
Lastly, on cold start the whole car shakes like a 1970’s tractor for about 15 seconds 😂 then it ticks over like the well made German car it’s meant to be 🤨😂 Normal on this engine or cause for concern? Runs perfectly well mannered after the initial tremors.
Any suggestions on any of that? I have VCDS Lite, but it won’t talk to my car because it’s CAN BUS, so I can’t pull any diagnostics up 🙄 normal cheap OBD reader says there are no generic codes stored to read.
All answers gratefully recieved…I’m at the end of my tether!
