B052C

Left Assist Step Switch Circuit

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Left auxiliary step (footrest) does not work
Fault indicator flashing
Error message on display

Causes

Open or short circuit in wiring harness
Auxiliary stage switch malfunction
Oxidation of contacts
Problems with the control unit
Damage to connectors

How to Fix

Check the integrity of the wiring harness
Check the condition of contacts and connectors
Test auxiliary stage switch
Check power and ground circuit
Replace switch or wiring harness if necessary
Update control unit software (if required)

Related codes

B052D B052B U0121