Hi, I have a problem with my UK A5 3.0 TDI quattro sport, I have owned the car since new, now has 47,000 miles, it is out of warranty.
About 6 weeks ago, I was cruising along when an error warning appeared on the dash display, it said "oil level sensor defective" it went out then a yellow symbol of an oil can appeared with the word sensor underneath. I stopped immediately and checked under the bonnet, all looked well,oil level on dipstick was perfect.
Managed to drive home 50 miles with oil sensor symbol showing. When i had a proper look, the drive belt had frayed/split and was fllailing around. Took car to local garage, diagnosis was that the tensioner had failed, causing the belt to go slack, this then shredded and ripped the wiring harness (3 wires) to the oil level sensor in the sump in half.
The garage fitted a new belt,tensioner and pulleys, they rejoined the wires (soldered) All was well apart from the sensor light still showing every time the car was started. They could not clear the fault, They said the sensor was "wet" with oil on the outside so I bought a new sensor from Audi and fitted it into the sump, still have the warning lamp/error.
They were beat, so I took it to a "expert/highly recommended" auto electrician, he worked for 4 hours on it, it has him beat, he says possible ecu damage? Is there a way to turn it off via Vagcom/vcds? everything else works fine. My car came with a factory fitted dipstick, so does not have oil level check in the MMI. I do not want to take it to the stealers to charge me £125 an hour for thing I can possibly do myself, I can get access to a vagcom/ Vcds but the person has limited knowledge of it.
Everything else works fine. My car came with a factory fitted dipstick, so does not have oil level check in the MMI. I do not want to take it to the stealers to charge me £125 an hour for thing I can possibly do myself, I can get access to a vagcom/ Vcds but the person has limited knowledge of it. Everytime we clear the fault it returns, below is the fault code..
4640 Engine oil Temp. Sensor (G8) : Signal Too Low
P0197 00  - -
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 157
Mileage: 74332 km