Hazard lights flashing really fast when car locked.

sidibear · Feb 2, 2011

2008 B7 2.0 tdi avant. I parked up last night and locked it off the remote as I always do. About 10 minutes later my friend who had parked near came and told me my lights were flashing. I went out to find the hazard lights flashing about twice as quick as they normally would.
What would cause this as its never happened before?

kite · Feb 2, 2011

sounds like your alarm was going off and the sounder has failed.
Have the car scanned for faults.
You could try setting the alarm with the drivers window open, once the alarm is set
wave your arm about inside the car to set off the alarm, can you hear the horn !!!

benr · Feb 2, 2011

Im sure when mine went off a couple of weeks back because someone was in the car the siren goes then the siren times-out the indicators carry on for longer. Maybe that's why?

sidibear · Feb 2, 2011

Kite, thank you for your reply. I have just tried that and the alarm went off, it did take a fair bit of arm waving to do it though.

sidibear · Feb 2, 2011

Benr, no one was in the car and there are no signs that anyone has tried to get in.

old-man · Feb 2, 2011

sidibear said:
About 10 minutes later my friend who had parked near came and told me my lights were flashing. I went out to find the hazard lights flashing about twice as quick as they normally would.

Mine does the same usually when it cold outside, its as if the car is cooling down after having the heating on and when I switch off the change in internal temp sets just the hazzards off. Its done it maybe three or fours time in the past 12 months (that I'm aware of) and I'm not aware of either a full alarm activation or any attempt to get in.

During the last service I asked them to check. they found no recorded faults but noticed the internal sensor was set very high so they have turned it down and advised nothing is left on the back seat! It's done it once since so I will take it back before the warranty expires. They gave me a printout stating what they had done and the description of an item that may need changing if it continues (sorry I dont have part description to hand but can post if required this weekend when I get home).

sidibear · Feb 2, 2011

Old-Man, Thank you, it was cold outside last night and I did have the heating on while driving. Its due a service so I will get them to check it over.

old-man · Feb 2, 2011

Please let me know if they find anything.

I forgot to mention the last time it did it, it was cold (but not as cold as the recent weather) and raining. Maybe it coincides with weather that cause the windows to mist up?!! It's the only common factor I can think of.

old-man · Mar 3, 2011

My alarm activated again today so I'll phone Audi tomorrow. When I reported the issue last time they indicated the G303 internal monitor may need replacing. What is this and is it a big job to change?

MrSmithr · Aug 30, 2017

Sorry to necro the thread but I'm suffering a similar problem.

Was testing for parasitic draw because my battery kept draining.

Red meter probe in 10A socket on meter and connected to negative battery cable, black meter probe to battery negative post. Meter set to 10A DC.

Meter was reading 1.4A,
Disconnected aftermarket stereo dropped to 0.8A. So decided to check the wiring behind the stereo to see if there was a dodgy cable and the hazards/cluster started flashing really fast, meter read 3.3A battery flattened in seconds.

My initial thoughts were the alarm but it appears to have been disabled because vcds confirms error when trying to access the relevant channel.

Did you ever get the price for the interior monitor sensor?

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Hazard lights flashing really fast when car locked.

sidibear

Going with the flow.

kite

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benr

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sidibear

Going with the flow.

sidibear

Going with the flow.

old-man

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sidibear

Going with the flow.

old-man

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old-man

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MrSmithr

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