B3874

Wiper Low Speed Relay Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$11–56 (est.)

Symptoms

Wipers do not work at low speed
Wipers only work at high speed
Intermittent wiper operation

Causes

Faulty low speed wiper relay
Open or short circuit in wiring harness
Problems with the control signal from the control unit
Oxidation of relay contacts or connectors

How to Fix

Check the low speed wiper relay
Inspect the wiring harness for damage
Check relay contacts and connectors for oxidation
Replace relay if necessary
Check the control signal from the control unit

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