Audi A4 wiper relay location issue causing intermittent operation and wipers stopping mid-windshield on Audi A4

Submitted by gaphap · Jun 23, 2025
Published by RepairPal

Problem overview

Some Audi A4 owners report experiencing intermittent operation of their windshield wipers, including issues where the wipers stop mid-windshield. These problems may stem from a faulty wiper relay, which is typically located in the fuse box/relay plate above the pedals on the driver's side. Owners have noted that if the wipers suddenly stop working, checking the relay's condition is a prudent first step, as symptoms of a malfunctioning relay can include improper functioning of the intermittent setting and varying wiper speeds. Additionally, some owners find that malfunctioning wiper blades may indicate a relay issue, as the relay is responsible for signaling the wiper module. In some cases, problems with the wiper park switches or the lever controlling the wipers can also affect wiper operation. It is crucial for owners to ensure the relay is functioning correctly to maintain proper wiper operation, particularly in situations where the wipers operate unexpectedly or intermittently.

3 people reported this problem
1 comment
Schedule Repair

Audi A4 vehicles with this problem

Average mileage: 115,000 miles
(85,000 - 145,000)

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