U020A

Lost Communication With Moveable Roof Control Module B

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–222 (est.)

Symptoms

Sliding roof does not work
Error message on the dashboard
The roof works intermittently
The roof does not respond to commands

Causes

Broken or damaged wires in the communication circuit
Roof control module B fault
Poor contact in connectors
Module power problems
Software error in the control unit

How to Fix

Check the integrity of the wiring harness to the roof module
Inspect and clean the connector contacts
Check the power supply and ground of the module
Scan the system for other errors
Replace roof control module B if necessary

Related codes

U0208 U0209 U020B