VW Touran Turn Signal Issue Triggers Dashboard Errors

Having worked on a 2010 VW Sharan with similar electrical fault symptoms, I can share my experience. My knowledge level with car electrics is moderate, gained mostly through dealing with various turn signal issues over the years. The symptoms you describe match what I encountered, intermittent turn indicator operation and error messages. In my case, the flasher relay was working fine, but the workshop discovered a loose connection in the wiring harness leading to the front turn signal assembly. The repair involved: Complete diagnostic scan, Testing all turn signal connections, Replacing a damaged wire connector, Resetting the fault codes Total cost was 95€ and completely resolved the issue. The broken connection was causing the system to report faults intermittently. To provide more specific guidance for your case, could you share: Whether the issue affects left, right, or both turn signals, If the problem occurs more frequently when driving over bumps, Whether the error message appears before or after using the turn signals, If you notice any correlation with weather conditions These details would help determine if your issue has the same root cause or requires different troubleshooting steps.

After my latest service at 88352km, I also experienced similar electrical gremlins. The workshop found it was actually a corroded bulb socket in the front turn signal assembly causing intermittent contact. When they replaced the entire lamp housing and bulb, both the error messages and irregular operation cleared up completely. My repair involved: Turn signal lamp housing replacement, New automotive lighting connector install, System diagnostic reset Total repair came to 140€ including parts and labor. The new housing includes better weather sealing than the original, which should prevent future corrosion issues. Worth checking your bulb sockets for similar corrosion before assuming more complex electrical problems.

Thanks for sharing those repair details. That matches up perfectly with what I experienced on my Sharan, these VW signal lamp housings from that era seem prone to corrosion damage. After my initial wiring fix, I actually ended up with the same corrupted socket issue about 6 months later. The electrical fault codes returned and the turn signal started acting up again. Rather than mess with individual connections again, I went straight for a complete lamp housing replacement like you did. The newer housing design definitely has better sealing. Since installing it along with fresh connectors, the system has been completely stable with no error messages for over 18 months now. The flasher relay works perfectly and all electrical fault codes have stayed cleared. For anyone else reading, when you get intermittent turn signal issues on these VWs, checking the lamp housing condition should be one of the first diagnostic steps. The improved weather protection in the updated parts makes the 140€ repair cost worthwhile for a long-term fix.

The workshop diagnosis exactly matched my issue. My corroded bulb socket was causing terrible electrical fault problems, and replacing the full turn signal housing was definitely the right call. The repair included: Complete indicator light housing, New electrical connectors, System reset to clear codes Total cost was 140€ and solved both the intermittent operation and error messages. The updated housing design with better weather sealing should prevent the socket corrosion from recurring. For others experiencing these symptoms, have your shop check the bulb socket condition first. The flasher relay usually isnt the problem, its often just corroded connections in the older lamp housings causing the electrical gremlins. Worth investing in the updated parts rather than trying cheaper partial fixes that might not last. Really appreciate everyone sharing their similar experiences. Helped confirm I made the right repair choice rather than continuing to chase mysterious electrical issues.