Problems with the windshield wipers of the Audi TT (2015): Malfunction of the rain/light sensor?

Hey, I had a similar problem with my Audi A4 (built in 2013, diesel). So my experience with cars is mediocre, but I can still tell you about it. At my garage, they first checked the sensor, but that wasn't the problem. What they then found was an incorrectly installed windshield. This affected the work of the windshield wipers. They then fitted the correct windshield and everything has worked perfectly ever since. The cost was 550 euros. Pretty expensive, isn't it? But it was worth it. Have you provided all the information about your car? Maybe I can give you a more precise answer if you tell me more about your vehicle. What windshield do you have at the moment? How often have the windshield wipers been changed? Any information could be helpful.

(Translated from German)

Hey, thanks for your quick reply! Wow, that sounds really expensive, but I'm glad it got resolved on your end. Honestly, I have no idea what windshield I have. But my wipers were last replaced at my last service about 62143 km ago, or something like that. I never thought about the windshield being the problem, but I'll definitely bring that up at my next garage visit. Thanks again for your tip!

(Translated from German)

Hey, no problem, that's what we drivers are here for, right? Communicate and support as best we can! Since you say that your windshield wipers were last changed at around 62143 km, it could also be simply due to wear and tear on the wipers, especially if they've been used a lot. You could try replacing them and see if that helps. If this is not the case, it would certainly make sense to ask your mechanic about the problem with the windshield. It can never hurt to address these points, especially if you seem to have had problems with it for a long time. But I would first test the simpler and cheaper options before considering an expensive windshield replacement. And of course, your mechanic knows your car best, so maybe he'll be able to think of something else that we don't have on our radar. I hope I've been able to help you!

(Translated from German)

Hello, yes exactly, that's a good idea. You're right, it could just be the windshield wipers. I'll replace them soon and see if that makes any difference. If the problem still persists, I'll take the car to the garage and mention your suspicions about the windshield. Thanks again for your help, I really appreciate it! I'll try the low cost option first though, and hopefully that will solve the whole hassle. You've really helped me a lot, thank you!

(Translated from German)

Hi! It could be the rain/light sensor causing the issue. I've had a similar problem before in the past. Have you tried checking the wiper blades or sensor alignment? What steps have you taken so far to troubleshoot this?

Before you start replacing parts, it's a good idea to check the condition of your wiper blades. If they are worn out, they might not clean the windshield properly. If the blades are fine, then you might want to check the alignment of the rain/light sensor. If it's not properly aligned, it might not be able to detect the rain properly, causing the wipers to not work as they should.