B0286

Electric Rear Defrost Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$6–56 (est.)

Symptoms

Heated rear window does not work
Heating is not working at full capacity
Intermittent heating operation
Heating indicator does not light up

Causes

Broken heating element
Oxidation of contacts on the rear window
Wiring harness damage
Heating relay malfunction
Fuse problems
Control unit defective

How to Fix

Check the condition of the heating circuit fuse
Check the operation of the heating relay
Inspect the contacts on the rear window
Check the integrity of the heating filaments
Diagnose the circuit resistance with a multimeter
Check the integrity of the wiring harness from the control unit to the glass

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