MERCEDES E240 2003 MODEL MALFUNCTION ELECTRICAL CONSUMERS SWITCHED OFF

I would get your vehicle to a workshop

Your battery voltage is low. That is why you get some but not all the functioning. The alternator is currently unable to fully recharge the battery. Replacing the battery should fix the problem. Borch battery?

you can go to advance or auto zone and have them do a drain test on the battery, there is no charge for it, if it is a electrical drain it will show it on there computer. If so then you have to start tracking were it being drained from and that is no
t easy or cheep.

go to www. autoelectronico.com and fix it.

translate this amazing website, with your browser .
God bless you

it is likely the large battery in the boot that has weakened, if after driving car for some time when you restart the message disappears.

this may be over charging the battries if it is electrc switched off. or it may be malfunction .

Removing:

• Switch off all electrical consumers, switch off ignition key and remove ignition key.
• Remove rear luggage compartment side panel trim (left or right).

• Remove 3 nuts, arrows, and remove housing.
• Remove bulb holder.

Installing:

• Install bulb holder.
• Insert housing into body opening.
• Tighten nuts.
• Install applicable rear luggage compartment side panel trim.

Rear Light Bulb Holder Removing And Installing:
Removing:

• Disconnect electrical connector.
• Depress retainers, arrows, and remove bulb holder.

Installing:

• Install in reverse order of removal.

And the Center Mounted Brake Lamp.
High mount Brake Light Removing And Installing:
The high mount brake light is installed in the rear shelf.
Removing:

• Switch off all electrical consumers, switch off ignition key and remove ignition key.
• Disconnect electrical connector from high mount brake light.
• Remove rear shelf
• Un-clip high-mount brake light from rear shelf, arrows.
• Install in reverse order of removal.

NOTE: The bulb holder base plate contains soldered- in light emitting diodes (LEDs) that are not replaceable. In the event of LED malfunction, replace complete bulb holder.
Additional

seems your battery is low.

This is difficult because the computer can't detect a problem, your car thinks everything is ok. In reality what is happening is the electrical component inside the MAF sensor becomes contaminated by the impurities in the air (heavies) These containments imbed themselves to electrical component that senses the air flow causing the sensor to be slightly off, but not enough to trigger the MIL (malfunction indicator lamp). Replace the MAF sensor with a new sensor and you're problem will go away, plus your car get better mileage and performance. (Mass Air Flow MAF sensor

Crank shaft position sensor is bad. This is the most common failure. Its location is on the rear drivers side of engine, where the transmission bell housing mates to the engine, only one small bolt and a two prong electrical connector hold it on. Usually will not throw a trouble code. If you remove it you can test it with an ohm meter, will have an erratic reading or read open loop, can malfunction intermittently or permanently after parking vehicle and won't restart. Applying some heat source to it during ohm testing with a hot air heat gun will usually cause the sensor to read open loop if your not sure if its bad or not. This reply is probably way to late, but I just happened to come accross it while online. Harry (master certified MBZ diagnostic tech)