Where is the battery control module in a Mercedes Benz?
The battery control module is located in the trunk next to the battery and spare tire. It monitors the voltage level of both batteries and the alternator and sets DTCs (diagnostic trouble codes) in the event of a failure. It also controls the auxiliary battery relay.
Why is my Mercedes-Benz E class battery not working?
If the voltage rises above and/or drops below range, the voltage regulator may be at fault. The voltage regulator is described more closely in Step 4. If you want to monitor each battery’s voltage level independently, you will need to test directly at the battery with a DVOM (digital volt ohm meter).
Where is the Battery Control Module ( BCM ) installed?
• The battery control module (BCM) also activates the battery isolating relay (K57/2) if necessary. A distinction is made between 2 states: The battery control module is installed in the trunk to monitor the batteries (the installation position depends on the equipment.
How many batteries does an E Class W211 have?
E Class W211, CLS Class for example have two batteries. • The battery control module monitors the operating states as well as the voltage conditions in the vehicle. • Depending on the performance measured for the battery, consumers can be switched off in 2 priorities (switched off by means of CAN message).
Is the battery control module of a Mercedes Benz defective?
Failing that its the Battery control module. And failing that I am selling this piece of $hit car that is too overly complicated for its own good Mercedes use to mean quality cars…. how I wish the old days would return. Does your car have two (2) batteries? It may be possible that the small battery is defective.
What to do if your battery control module goes bad?
If its the original, replace with a AGM immediately It is possible that you replaced a bad alternator with another bad alternator, it happened to Noodles a couple of years back. Last but not least, the voltage regulator is a somewhat common problem, you may want to have one handy. Thanks Roadking999..
Where is the battery in a Mercedes Benz E-class?
The Mercedes-Benz E-Class has one main battery in the trunk and an auxiliary battery in the engine bay. With so many electronic components, things go wrong and could end up draining one of the batteries.
• The battery control module (BCM) also activates the battery isolating relay (K57/2) if necessary. A distinction is made between 2 states: The battery control module is installed in the trunk to monitor the batteries (the installation position depends on the equipment.
How does the auxiliary battery control module work?
The battery control module monitors system voltage. If voltage reaches a low point, the auxiliary battery relay closes to connect the battery to the vehicle fuse blocks. Remember that your car may have been serviced before and had parts replaced with different size fasteners used in the replacement.
What kind of battery does a 2003 W211 have?
I’m equipped to do anything, so let’s see if we can get this one sorted – it’s my younger brother’s car…. a 2003 E320 (WDBUF65J53A150123) with a hair under 160k miles. Battery drains close to dead overnight, needs a quick jump and it’s fine for the day.
How does the auxiliary battery work on a Mercedes Benz?
The auxiliary battery supplies power for a limited time if system charging or battery voltage drops. The battery control module monitors system voltage. If voltage reaches a low point, the auxiliary battery relay closes to connect the battery to the vehicle fuse blocks.
The battery control module is located in the trunk next to the battery and spare tire. It monitors the voltage level of both batteries and the alternator and sets DTCs (diagnostic trouble codes) in the event of a failure. It also controls the auxiliary battery relay.
The battery control module monitors system voltage. If voltage reaches a low point, the auxiliary battery relay closes to connect the battery to the vehicle fuse blocks. Remember that your car may have been serviced before and had parts replaced with different size fasteners used in the replacement.
I’m equipped to do anything, so let’s see if we can get this one sorted – it’s my younger brother’s car…. a 2003 E320 (WDBUF65J53A150123) with a hair under 160k miles. Battery drains close to dead overnight, needs a quick jump and it’s fine for the day.
The auxiliary battery supplies power for a limited time if system charging or battery voltage drops. The battery control module monitors system voltage. If voltage reaches a low point, the auxiliary battery relay closes to connect the battery to the vehicle fuse blocks.
What’s the fault code for a Mercedes 300?
# Flashes PROBABLE CAUSE for Mercedes vehicles 300 series (2.8L and 3.2L) 1991 and later. Going by his listing you may have been looking at the 3.2 litre fault codes ? I haven’t had time to check, but how does the info compare to this source? I haven’t had time to check, but how does the info compare to this source? Click to expand…
Is there a possible Battery Control Module fault?
Possible Battery Control Module Fault?? I have been through topics on this which have been very useful. However I am concerned that I do not want to throw money at parts I don’t need. With a new full battery I get the consumables message up after about an hour driving.
Is there an online Mercedes Benz fault code manual?
The Online MB Fault Code Manual covers 1988-1997 Analog & 1993-200 Digital Codes. Here it is ! Waddya think oh wise one’s of the world of Benz – WORTH A SCHTICKY ???????