Mercedes GLE Windshield Washer Heater Problem

I have a GLE, and I dealt with something similar last winter. The windshield washer system became a real headache. The principle is akin to a household appliance – a faulty connection can disable the entire system. If your nozzles are freezing despite the heater supposedly working, it strongly suggests the heater malfunction is indeed the culprit. Have you inspected the wiring harness leading to the washer heater? A loose connector or corroded pin can cause intermittent issues.

Thanks for the insight! I haven't had a chance to deeply inspect the wiring harness myself. Where exactly is the washer heater located, and is it easily accessible? I'm wondering if it's something I can check myself before taking it in.

The washer heater is typically integrated within the washer fluid reservoir or very close to it. Access depends on your specific GLE configuration, but it usually involves removing some trim or accessing it from underneath. Given the diagnostic code points to the heater and the nozzles are freezing, I would advise against extensive DIY troubleshooting without proper tools and experience. Incorrect handling of electrical components can lead to further issues. The 95€ quote seems reasonable to diagnose and repair a potentially faulty connection; a workshop will be able to test the heater functionality and pinpoint the issue efficiently.

Thanks, that's helpful. I appreciate the advice. I'll take it to the workshop, as suggested. Turns out it was indeed a corroded connector on the washer heater. They cleaned it, applied some dielectric grease, and the error is gone, and the washer fluid is spraying as it should. 95€ well spent!