Faulty wiper relay
A relay controls the windshield wiper's on/off and speed.
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Probability
Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made
HIGH
Typical consequences
If this defect is detected, it may lead to the following problems:
- Restriction of driving comfort
Functionality of windshield wiper relay
A windshield wiper relay in a car is an essential component that controls the electric motor of the wiper system. It acts as a switch that regulates the flow of current to the wiper motors. Depending on the control signal that the relay receives, it can interrupt or forward the current flow.
This allows for different wiping speeds and modes, including slow wipe, fast wipe, and intermittent wipe. Sometimes the relay is also responsible for activating the windshield washer system. A malfunction of the relay can cause the wipers to not work properly.