Karmann Colorado Operating Instructions Manual - page 71

Power supply

FAULT IDENTIFICATION AND ELIMINATION 

12-4

Fault

Body battery does not supply any voltage

Body battery does not charge during travel

Body battery does not charge when

connected to 230 V network

(Charge indicator of 230 V network is via

green indicator lamp on control panel).

Possible cause

Body battery discharged to low level

Connector contacts and connections 

defective

Fuses or relay in battery charger defective

230 V automatic circuit breaker switched off

Fuses or relay in battery charger defective

Remedy

If the battery if discharged to low level it is

irreparably damaged and must be replaced.

When the vehicle is temporarily laid up for

the winter, charge the body battery and

disconnect the terminals, pay attention to

silent consumers (e.g. frost protection valve) 

Check and correct if necessary

Contact specialist repair shop

Switch on circuit breaker

Contact specialist repair shop