Greetings,
I own a W212 that has intermittently been connected to chargers and not used appropriately. Now, after being locked, the indicators deactivate while the inside lights illuminate. I recognise that this is often related to the alarm siren battery problem. I will probably alter the whole composition at some time.
The device is presently secured with a key, the alarm is off, and it is connected to a trickle charger. I received a 'auxiliary battery malfunction' error, despite my certainty that early W212 models lack an auxiliary battery. I presume the issue is with the alarm siren situated behind the front passenger tire arch.
Can a 'quick remedy' be achieved by just disconnecting the siren? Indeed, I understand that the alarm will not activate in the event of a malfunction; but, I have seen some discussions suggesting that only disabling the siren may temporarily alleviate the issues with the danger lights until I can address the matter appropriately.
Salutations!