RED reduced braking power - visit workshop?!
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Senior Member
Joined: Jul 2011
Posts: 499
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2006 E55 AMG
RED reduced braking power - visit workshop?!
Well... Earlier in the day the car shut off at a red light ( twice in two days actually )... I'm not sure if this is related since my CPS is shot and I am far over due to replace it.
Well, I'm on the highway and I get a message saying that the battery is low and convenience functions are disables...
Drove 2 more minutes it said they were all restored.
Then drove a bit more through the day.. then was home for a while.. stopped a few more places.. then at a friends house.
When I came outside and started my car.. I got ESP malfunction and the RED brake message...
The alternator was recently replaced with a brand new regulator...
any guesses? Battery? (car does not hesitate to crank.. so front battery?)
Well, I'm on the highway and I get a message saying that the battery is low and convenience functions are disables...
Drove 2 more minutes it said they were all restored.
Then drove a bit more through the day.. then was home for a while.. stopped a few more places.. then at a friends house.
When I came outside and started my car.. I got ESP malfunction and the RED brake message...
The alternator was recently replaced with a brand new regulator...
any guesses? Battery? (car does not hesitate to crank.. so front battery?)
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Joined: Oct 2011
Posts: 1,212
Likes: 5
From: Chicago
03 E55 AMG, 06 Harley Road King Custom 06 Ram 2500 Cummins, 97 Firebird Race Car, 88 Cutlass Supreme
If the front battery is original you may want to consider replacing it just as preventative maintenance. I'd throw a charger on the small battery at a 10 amp or so setting and let it do its thing for a bit and while it's still plugged in start the car. I had a red warning after the car sat a couple months that didn't want to go away till I started it with the battery charging. It was fine all year after that. I'm likely replacing mine in the spring for good measure. Your brakes run off this battery, I don't like the idea of it being old. I replace stuff early all the time cause I'm a weirdo and like to tinker though.
If the big $ SBC brake pump is dead its still under factory warranty so you know though. They were problematic so they were given 10 year unlimited mileage warranties.
If the big $ SBC brake pump is dead its still under factory warranty so you know though. They were problematic so they were given 10 year unlimited mileage warranties.
Last edited by BBBSS; Dec 28, 2012 at 12:36 AM. Reason: is dead
Thread Starter
Senior Member
Joined: Jul 2011
Posts: 499
Likes: 3
2006 E55 AMG
If the front battery is original you may want to consider replacing it just as preventative maintenance. I'd throw a charger on the small battery at a 10 amp or so setting and let it do its thing for a bit and while it's still plugged in start the car. I had a red warning after the car sat a couple months that didn't want to go away till I started it with the battery charging. It was fine all year after that. I'm likely replacing mine in the spring for good measure. Your brakes run off this battery, I don't like the idea of it being old. I replace stuff early all the time cause I'm a weirdo and like to tinker though.
If the big $ SBC brake pump is dead its still under factory warranty so you know though. They were problematic so they were given 10 year unlimited mileage warranties.
If the big $ SBC brake pump is dead its still under factory warranty so you know though. They were problematic so they were given 10 year unlimited mileage warranties.
Also.. Will the low battery notice come on with the front battery on it's way out?
Last edited by cwmateiuc; Dec 28, 2012 at 06:48 AM.
MBWorld Fanatic!
Joined: Oct 2011
Posts: 1,212
Likes: 5
From: Chicago
03 E55 AMG, 06 Harley Road King Custom 06 Ram 2500 Cummins, 97 Firebird Race Car, 88 Cutlass Supreme
Can't say for sure on the title issue but I wouldn't mention it voluntarily. lol
Yes a weak front battery will throw the red convenience features disabled message. That was my problem. The car didn't seem to want to charge the front battery but once I got it's voltage up it was happy and worked like a champ again for the entire year.
Yes a weak front battery will throw the red convenience features disabled message. That was my problem. The car didn't seem to want to charge the front battery but once I got it's voltage up it was happy and worked like a champ again for the entire year.
