I dug into the pit from the inside but there is only a blower. I have a problem with the battery displayed and the service visit message, Charging at 14.1V, the battery is not new but it burns to the touch.
The discussion centers around the existence and location of an additional backup battery in the 2005 Mercedes W203 C180. Users clarify that this model does not have a secondary battery; it only features the main battery located on the passenger side, under the cabin air filter housing. One user initially inquired about the backup battery but later identified the issue as a failing alternator, which was not charging adequately, leading to battery problems. The alternator was found to be charging at 13.3V instead of the expected 14V. Summary generated by the language model.
