B3577

Suspension Control Select Switch Contact Malfunction

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Inability to switch suspension modes
Spontaneous mode switching
Suspension warning light comes on

Causes

Oxidation of switch contacts
Wiring harness damage
Mechanical wear on the switch
Malfunction of the suspension control unit

How to Fix

Check the condition of the switch contacts
Inspect the wiring harness for damage
Test the switch with a multimeter
Replace switch or wiring harness if necessary
Update suspension control unit software

Related codes

B3578 B3579 C1234