audi S3 fans after turn off ignition
Discussion
Krikkit said:
AC turned to full cold means it'll be pulling air through the condenser fairly quickly to keep the heat exchange going, hence the fans being on.
I did notice it earlier in the day also when I didn't have AC on ? just had me concerned as it isn't something that's happend on other cars I have had
ked. It's normal for the fan(s) to run after the engine is stopped however...
There is a fairly common fault in that a relay that controls the fans goes short circuit, and the fans just run and run.. until the battery is flat.
So if your fans were still running for anything more than 5 minutes or so after stopping th engine, I'd suspect the relay.
It could also be the thermo sensor in the radiator (if present on your model).
There is a fairly common fault in that a relay that controls the fans goes short circuit, and the fans just run and run.. until the battery is flat.
So if your fans were still running for anything more than 5 minutes or so after stopping th engine, I'd suspect the relay.
It could also be the thermo sensor in the radiator (if present on your model).
Warranty.
Take it to Audi and get your pants pulled down for a diagnostic (that bit is not covered by warranty if there's no fault).
Don't panic op. Just see how it goes over the next few journeys.
It can be normal and depends on a few parameters but the car is just helping itself to cool down if if thinks it needs to.
Take it to Audi and get your pants pulled down for a diagnostic (that bit is not covered by warranty if there's no fault).
Don't panic op. Just see how it goes over the next few journeys.
It can be normal and depends on a few parameters but the car is just helping itself to cool down if if thinks it needs to.
Robvw said:
Krikkit said:
AC turned to full cold means it'll be pulling air through the condenser fairly quickly to keep the heat exchange going, hence the fans being on.
I did notice it earlier in the day also when I didn't have AC on ? just had me concerned as it isn't something that's happend on other cars I have hadTonyRPH said:
It's normal for the fan(s) to run after the engine is stopped however...
There is a fairly common fault in that a relay that controls the fans goes short circuit, and the fans just run and run.. until the battery is flat.
So if your fans were still running for anything more than 5 minutes or so after stopping th engine, I'd suspect the relay.
It could also be the thermo sensor in the radiator (if present on your model).
did stop around 3min after There is a fairly common fault in that a relay that controls the fans goes short circuit, and the fans just run and run.. until the battery is flat.
So if your fans were still running for anything more than 5 minutes or so after stopping th engine, I'd suspect the relay.
It could also be the thermo sensor in the radiator (if present on your model).
TonyRPH said:
It's normal for the fan(s) to run after the engine is stopped however...
There is a fairly common fault in that a relay that controls the fans goes short circuit, and the fans just run and run.. until the battery is flat.
So if your fans were still running for anything more than 5 minutes or so after stopping th engine, I'd suspect the relay.
It could also be the thermo sensor in the radiator (if present on your model).
I had this problem on my old A3, 3.2. Fans would just run continually until battery was flat, I had to remove a fuse (or relay?) to stop them.There is a fairly common fault in that a relay that controls the fans goes short circuit, and the fans just run and run.. until the battery is flat.
So if your fans were still running for anything more than 5 minutes or so after stopping th engine, I'd suspect the relay.
It could also be the thermo sensor in the radiator (if present on your model).
Audi dealer replaced the fan controller and both fans - they told me it was all one assembly? Mine was an older model so maybe not the same but it looks like they've not learnt from it...
catso said:
TonyRPH said:
It's normal for the fan(s) to run after the engine is stopped however...
There is a fairly common fault in that a relay that controls the fans goes short circuit, and the fans just run and run.. until the battery is flat.
So if your fans were still running for anything more than 5 minutes or so after stopping th engine, I'd suspect the relay.
It could also be the thermo sensor in the radiator (if present on your model).
I had this problem on my old A3, 3.2. Fans would just run continually until battery was flat, I had to remove a fuse (or relay?) to stop them.There is a fairly common fault in that a relay that controls the fans goes short circuit, and the fans just run and run.. until the battery is flat.
So if your fans were still running for anything more than 5 minutes or so after stopping th engine, I'd suspect the relay.
It could also be the thermo sensor in the radiator (if present on your model).
Audi dealer replaced the fan controller and both fans - they told me it was all one assembly? Mine was an older model so maybe not the same but it looks like they've not learnt from it...
drove this morning with out ac on the motor way around 40 miles an it didn't happen after this trip
catso said:
OK, I think mine might have run on a while after switching off on occasion so, presumably by design?
Yes.The fan relay has a direct feed (via a hefty fuse on top of the battery in most cases) from the battery, and the fans can run whether the ignition is on or not.
This I believe is to reduce heat soak on very hot days.
As long as there were no warning lights illuminated on the dash then its a normal cooling process.
Mine is older than yours and when this happened to me in June it turned out to be a water pump failure, although there were warning lights to support the fault leading to it overheat.
In the same week the Aircon pump also failed so it was a hell of an expensive month with a nearly new car with low mileage its not something i expect of Audi - seems like they have cut costs to the point where they seem to spec parts made of chocolate, or running higher performance variants on standard parts which can't take increased heat build up.
I'm on my 5th Audi and had very little issues with them except each new generation appears to decline in quality overall - not happy with S3 but i guess other manufacturers are doing the same.... just out of warranty economics
Mine is older than yours and when this happened to me in June it turned out to be a water pump failure, although there were warning lights to support the fault leading to it overheat.
In the same week the Aircon pump also failed so it was a hell of an expensive month with a nearly new car with low mileage its not something i expect of Audi - seems like they have cut costs to the point where they seem to spec parts made of chocolate, or running higher performance variants on standard parts which can't take increased heat build up.
I'm on my 5th Audi and had very little issues with them except each new generation appears to decline in quality overall - not happy with S3 but i guess other manufacturers are doing the same.... just out of warranty economics
Off topic, but I used to have a Starlet GT Turbo when younger that had a turbo timer fitted in Japan, it kept the engine running for however many minutes you set it to after you switched off the ignition, as far as I'm aware it was mainly to keep the oil flowing through the turbo and fans going to cool it down gently which helped the turbo last longer, not sure if this genuinely helps or not.
I just enjoyed the weird looks I got from people when locking up a running car and wandering off, a few people even tried to open the doors including an old guy that came out of a church, I had parked it outside my mates flat and was keeping an eye out the window until it turned off and seen him trying the handles and looking confused, I assumed he was going to turn it off rather than take it for a spin since he just came from a church and looked about 80!
That was a fun little car while it lasted, I also had it in the days before the usual chavs discovered them so they were rare back then, sadly the head gasket went one day and it never really recovered from it...
I just enjoyed the weird looks I got from people when locking up a running car and wandering off, a few people even tried to open the doors including an old guy that came out of a church, I had parked it outside my mates flat and was keeping an eye out the window until it turned off and seen him trying the handles and looking confused, I assumed he was going to turn it off rather than take it for a spin since he just came from a church and looked about 80!
That was a fun little car while it lasted, I also had it in the days before the usual chavs discovered them so they were rare back then, sadly the head gasket went one day and it never really recovered from it...
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