B051E

Assist Step Disable Switch Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Parking assistance system not working
Disabling adaptive cruise control
The malfunction lamp on the instrument panel lights up

Causes

Open or short circuit in the switch circuit
Assistant level switch faulty
Problems with the control unit
Oxidation of contacts
Wiring harness damage

How to Fix

Check the continuity of the switch circuit
Inspect contacts for oxidation
Test the assistant level switch
Check the operation of the control unit
Replace damaged components

Related codes

B051F B051D U0121