2005 SL 500 when suspension is selected I get, No Connection
The “No Connection” message on your 2005 SL500 when selecting the suspension is usually caused by the ABC (Active Body Control) suspension control module not getting power or the module itself being defective.
The first thing we recommend is to check the fuse related to the ABC suspension system. If the fuse is blown or there’s a power supply issue, the control unit won’t respond — which results in that “No Connection” message.
If the fuse is good, the next step would be to check for power and ground at the suspension control module itself. A diagnostic scanner that can communicate with the chassis module will also help confirm if the module is offline or just not responding.
Fuses are good, bought a new suspension control module and I still have the no connection problem.