B3620

Head-Up Display Information Up Switch Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

The head-up display does not operate regularly
Some information on the HUD stops being displayed
Spontaneous changes in displayed data without pressing a switch

Causes

Open or shorted in the switch wiring harness
Oxidation of switch contacts
Malfunction of the control switch itself
Problems with the HUD control unit
Damage to connection connectors
Software error in the control unit

How to Fix

Carry out diagnostics with a scanner to clarify the nature of the malfunction
Check the integrity of the wiring harness to the switch
Inspect the switch contacts for oxidation
Check the functionality of the switch itself
If necessary, replace faulty components
Clear error codes and check if the fault returns
If you suspect a software error, flash the control unit

Related codes

B3610 B3621 B3622