It's a fuse only on & within the positive cable only near the battery. Check the ohm reading on each side of the positive cable with the pyro fusible link between the test probes.

Hey Tiago, Thank you for dropping your query. We would suggest getting your car checked by the nearest mechanic for a proper problem diagnosis.

@@Xenons4U thanks already been to 5 mechanics and electrician and they all say different things and nobody solves it but thanks for answering thanks

​@@tiagoalmeida2714what did you do eventually? I've been told to replace the whole headlight and that is awful am sure that's not the only solution for me

@@torqueonline Olá a minha solução que deve ser a tua também e trocar o módulo tms e meter um novo codificar ao carro e fica como novo

Hello Lard, On the Mercedes-Benz catalog, part number a2059053414 is called an auxiliary battery because it doesn't have “mini” battery at the rear of the vehicle, like other models.

I have a 2010 c300. Is this where the auxiliary battery is? I changed the trunk and found nothing.

This is what it costs everywhere at the moment. Avoid AdBlue systems they are too fragile for normal usage and costs thousands to fix. Remove all the polution removal systems because they will ruin you. Let the world burn if this is what it costs to lessen polution. I am done with diesel engines they are too complex nowadays. My next car will be electric.

I have p11Dc myself, still looking into it myself,

@@Lavin711 I got out my shirt obd box and cleared off the faults took the hard for a good hard drive for 15 miles and seems to be ok since

Yes, this is great help.

maybe you already have a list of 8 cables