Audi Q5 Turn Signal Fault: Real Fix Guide

Having dealt with a similar electrical fault on my 2019 Audi Q3, I can share my experience as someone with moderate car repair knowledge. The turn indicator problems you describe sound very familiar. My dashboard was also showing error messages when using the turn signals. Initially thought it was just a burnt-out signal lamp, but the workshop discovered a loose cable connection at the indicator light assembly. The repair involved: Complete diagnostic scan, Removing the headlight assembly, Fixing a damaged wire connector, Testing all turn signal functions, Clearing error codes Total cost was 95 Euro including labor and parts. The issue hasnt returned since the repair was completed. For a more accurate assessment of your specific case, could you share: Whether both left and right turn signals are affected, If the indicator light flashes faster than normal, Whether the error messages appear consistently or intermittently, If there are any other electrical issues These details would help determine if youre facing the same connector issue or if its something else in the turn signal system.

The broken lens was indeed the root cause of my problem. After the latest service at 66058 KM, the mechanic found water damage inside the turn signal housing, which led to electrical issues. A complete lamp replacement was needed since the bulb replacement alone wouldnt fix the underlying water intrusion. The indicator light now works perfectly, and all error codes have cleared from the system. The repair wasnt too complex but cost 220 Euro including parts and labor. Worth noting that moisture damage to any lighting assembly should be addressed quickly to prevent more extensive electrical problems.

You were right about checking the signal lamp first. Water intrusion into turn indicator assemblies is a common issue that often leads to electrical faults. The same thing happened to my Q3 before the connector problem I mentioned earlier, moisture got into the housing and corroded the contacts. A complete turn signal lamp replacement is definitely the right fix here rather than just swapping bulbs. When water gets into these assemblies, it can damage the internal circuits and create ongoing electrical issues if not properly addressed. The 220 Euro repair cost seems reasonable considering the parts and labor involved. Good to hear all the error messages cleared from your speedometer display. These electrical fault codes can be persistent until the root cause is properly fixed. From my experience with Audi lighting systems, addressing water damage early helps prevent more complex problems with the flasher relay and other electrical components down the line. The key learning here is that any sign of moisture in the turn indicator housing should be investigated immediately, even if the signals are still working. This preventive approach can save both time and money in the long run.

Thanks for the detailed explanation about the water damage issue. Good to know my instincts about checking the turn signal assembly first were correct. The repair cost was higher than expected but makes sense given the complete lamp replacement needed to fix the water intrusion problem. My experience can hopefully help others dealing with similar electrical gremlins in their cars, never ignore moisture in signal lamp housings since it only gets worse. The turn indicator is working perfectly now and the error messages are gone from the speedometer, so definitely worth the 220 Euro investment. Looking back, I wish I had checked for water damage when the broken lens first appeared. Could have prevented some of the electrical issues that developed later. At least now I know to address any lighting problems quickly before they cause more extensive damage to the car.