On dash voltage display
Thread Starter
Member
Joined: Dec 2005
Posts: 140
Likes: 0
From: Hong Kong
E55
On dash voltage display
I recently have the "Battery Protection" message and I searched around the net and I found that we can have the voltage showed on the dash. I dont know if it has been posted before but I just want to share what I have found and if possible, tell me the voltage you are getting from the display, therefore I know if it is my alternator going bad, thanks guys.
1. Turn your key to position 1
2. Briefly press the "R" button 3 times
3. You should have the current voltage shown
It will show as an extra manual and you can start your car with it and keep reading the voltage. It will gone if you turn off the car and the next time you want to see the voltage, just to the steps again. The extra manual also showing the engine oil level when engine on as well as the VIN.
Key in Position 1
Idle
1. Turn your key to position 1
2. Briefly press the "R" button 3 times
3. You should have the current voltage shown
It will show as an extra manual and you can start your car with it and keep reading the voltage. It will gone if you turn off the car and the next time you want to see the voltage, just to the steps again. The extra manual also showing the engine oil level when engine on as well as the VIN.
Key in Position 1
Idle
Super Member
Joined: Apr 2009
Posts: 552
Likes: 11
From: Chicago suburbs
2004 E55 AMG
Depending on the ambient temperature, I typically see 11.9-12.2 volts before startup with key in #2 position, 10.1-10.5 volts while its cranking, and right at 13.9 while the engine is running. I've also found that the voltage displayed is typically .2 volts lower than the actual voltage measured at the battery for whatever reason.
Super Member
Joined: Mar 2009
Posts: 937
Likes: 15
From: Alpharetta Georgia
2006 E55, 2006 saab 93 aero, 2010 glk 4m
^^Ali is your car an 06? Mine is and I discovered the button to do the trick on my 06 is to hold the driver side auto button for a while (5 or more seconds i can't recall).
MBWorld Fanatic!
Joined: May 2009
Posts: 1,484
Likes: 13
From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
mine is 2005, i tried every way mentioned in the forums but nothing, i noticed also all my friends who has 2005 also cant see it.
one my friends has 2006 and it shows by AUTO button.
one my friends has 2006 and it shows by AUTO button.
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MBWorld Fanatic!
Joined: May 2009
Posts: 1,122
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'91 964 Turbo, '02 E55's & '14 E63s-w
Trying to access the Service menu to reset the service indicator but having hard time getting Voltage displayed in the instrument cluster ? Any ideas as to how to get Voltage displayed. It's an '06
Thanks
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MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
Likes: 7
From: Puerto Rico
2005 E55 AMG
Interesting...I have an 05 and it works great. It must be in the MPH/TEMP display for it to work though.
Newbie
Joined: May 2024
Posts: 2
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MB 2007 E350
Depending on the ambient temperature, I typically see 11.9-12.2 volts before startup with key in #2 position, 10.1-10.5 volts while its cranking, and right at 13.9 while the engine is running. I've also found that the voltage displayed is typically .2 volts lower than the actual voltage measured at the battery for whatever reason.
