Electrical consumers switched off ??
Thread Starter
Newbie
Joined: Jul 2010
Posts: 3
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From: Buckinghamshire England
w211 270 CDi
Electrical consumers switched off ??
I am getting the Electrical consumers switched off 2 malfunctions message increasingly on my 2002 211 270CDi the heater blower stops and the interior light stops working. If I turned off the ignition and restart the malfunctions clear, the lights and the fan work again for a while then it comes up again after random time intervals ?? any ideas??
MBWorld Fanatic!
Joined: Dec 2006
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
Did you measure the battery voltage from the main and the AUX battery?
This has been discussed a lot before but if the message appears while you are driving, it could be your alternator (regulator) or an issue with the battery control module (I assume the SW update and other recall stuff has been performed a long time ago for this car).
If both batteries are good, the AUX battery relay should be checked.
Welcome to the forum. From your car I assume you are not from the US, you could fill your location info to your profile, it often helps a lot.
This has been discussed a lot before but if the message appears while you are driving, it could be your alternator (regulator) or an issue with the battery control module (I assume the SW update and other recall stuff has been performed a long time ago for this car).
If both batteries are good, the AUX battery relay should be checked.
Welcome to the forum. From your car I assume you are not from the US, you could fill your location info to your profile, it often helps a lot.
Thread Starter
Newbie
Joined: Jul 2010
Posts: 3
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From: Buckinghamshire England
w211 270 CDi
Hi – thanks for the prompt reply ! yes I am in the UK, and yes it happens when I’m driving (usually at low revs, slowing for a junction, although it happened this afternoon at 50 mph on the A34! But why just the heater fan and interior lights?
MBWorld Fanatic!
Joined: Dec 2006
Posts: 6,499
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
You did not comment on the battery voltage, it does sound like the voltage drops too low and the car switches off consumers. You did mention two malfunctions, I'm not sure how it appears at the instrument cluster but it looks like you have passed the first step of consumers being switched off because of low battery voltage (the alternator being not able to provide the current your consumers would draw). Several items get switched off at the first stage and only at the second stage the heater fan speed is reduced (not completely switched off).
The idea is that only important consumers from driving safety point of view are kept active as long as possible.
Thread Starter
Newbie
Joined: Jul 2010
Posts: 3
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From: Buckinghamshire England
w211 270 CDi
Junior Member
Joined: May 2010
Posts: 22
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From: somewhere in Germany
X218, W169, W451, S205, W415
This is a typical malfuction of an ol battery.
I think, you have to buy a new battery and everything is working right.
You should drive to your MB-dealer ... he knows the right type of battery.
Good luck!
I think, you have to buy a new battery and everything is working right.
You should drive to your MB-dealer ... he knows the right type of battery.
Good luck!
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Junior Member
Joined: Feb 2008
Posts: 53
Likes: 1
From: South Africa, Centurion
W211 E200 Kompressor
Battery voltage check
Parabolics, you can check the battery voltage in dash, provided you have the 4-zone climatronic aircon system.
This thread explains how to get to the diagnostic mode of the AC:
https://mbworld.org/forums/mercedes-...diag-mode.html
Channel 24 provides the battery voltage.
This thread explains how to get to the diagnostic mode of the AC:
https://mbworld.org/forums/mercedes-...diag-mode.html
Channel 24 provides the battery voltage.
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MBWorld Fanatic!
Joined: Dec 2006
Posts: 6,499
Likes: 335
From: Europe
223.168 & 213.012 & 906.633 & 214.005
Parabolics, you can check the battery voltage in dash, provided you have the 4-zone climatronic aircon system.
This thread explains how to get to the diagnostic mode of the AC:
https://mbworld.org/forums/mercedes-...diag-mode.html
Channel 24 provides the battery voltage.
This thread explains how to get to the diagnostic mode of the AC:
https://mbworld.org/forums/mercedes-...diag-mode.html
Channel 24 provides the battery voltage.
Junior Member
Joined: Feb 2008
Posts: 53
Likes: 1
From: South Africa, Centurion
W211 E200 Kompressor
Voltage of battery
There is no "the battery voltage" because the car has two batteries. Even if both should have the same voltage when the engine is running, this may not be the case if the AUX battery relay is misbehaving. The cluster or the AC display definitely does not work if one wants to know the idle voltage of each battery.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 6,499
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
I stand corrected... The "system" voltage is measured and displayed after accessing the correct channel on the diagnostic mode of the AAC. However, if one would disconnect a terminal of one of the batteries, then surely the system voltage = the remaining battery's voltage output when the engine is off? One can then reconnect and disconnect one of the terminals of the second battery to get info on the second batteries output.
Anyway a lot easier to measure each battery with a cheap multimeter without disconnecting any cables, the AUX battery relay anyway isolates the two batteries when ignition is switched off.
Newbie
Joined: Mar 2009
Posts: 1
Likes: 0
300TD, 300CD
Hi, I'm getting the battery warning, with engine running, I have 14.1 volts at the main battery. I changed the aux battery, but I'm not getting charge voltage to the aux. Meter reads batt. voltage, 12.8 VDC. I'm thinking relay, but I don't know its location. Anyone out there can point me in the right direction? (2005 320CDI)
Bob
Bob
