Mcobinad
Senior Member
- Joined
- Jun 27, 2011
- Messages
- 1,066
- Reaction score
- 13
- Location
- Milton Keynes
- Your Mercedes
- W219 Designo Black paint, R500 W251, CL600 W216
Hello everyone,
I gave my CLS a proper valeting this morning and after the wash & wax decided to park the car. The car won't start and the clock is running circles and a message came up on the instrument cluster reading "Reduced braking power start engine'' in red font. I tried to push down the brake pedal and start the car via keyless-go as usual, it cranks but won't start. The windows don't shut properly and the side mirrors don't fold back automatically. When i use my key to shut the car, it does not respond and after 10 minutes, i tried again only for the car to lock but won't open.
I had a quick look on the internet to find a solution, some E class owners on certain US forums had issues of such. Some suggested that it could be SBC pump unit or it could be the battery at fault. My wife while i tried to start the car had a quick look and said that the SBC pump unit trembles while i try to start the engine. I have heard that the SBC unit costs about £2,000 to fix. A mercedes SL owner said that he experienced a similar problem and it was cured when he changed his battery. I also read that the SBC unit comes with a 10 year unlimited warranty from MB. My car ran out of warranty 3 days ago and am totally discombobulated at this time. Car has been driving okay under warranty and now everything is taking a downturn.
Could this be braking problem, faulty SBC unit or battery problem? I forgot to mention as well that i always get this message anytime i drive the car ''Battery convenience functions temporarily unavailable" and it does go away after driving it around. I know a proper diagnostic is the only alternative to detect the problem but while waiting i would like to know if anyone on this forum has had some an issue and what was the remedy to the problem.
Thanks for reading and thanks for your anticipated responses
I gave my CLS a proper valeting this morning and after the wash & wax decided to park the car. The car won't start and the clock is running circles and a message came up on the instrument cluster reading "Reduced braking power start engine'' in red font. I tried to push down the brake pedal and start the car via keyless-go as usual, it cranks but won't start. The windows don't shut properly and the side mirrors don't fold back automatically. When i use my key to shut the car, it does not respond and after 10 minutes, i tried again only for the car to lock but won't open.
I had a quick look on the internet to find a solution, some E class owners on certain US forums had issues of such. Some suggested that it could be SBC pump unit or it could be the battery at fault. My wife while i tried to start the car had a quick look and said that the SBC pump unit trembles while i try to start the engine. I have heard that the SBC unit costs about £2,000 to fix. A mercedes SL owner said that he experienced a similar problem and it was cured when he changed his battery. I also read that the SBC unit comes with a 10 year unlimited warranty from MB. My car ran out of warranty 3 days ago and am totally discombobulated at this time. Car has been driving okay under warranty and now everything is taking a downturn.
Could this be braking problem, faulty SBC unit or battery problem? I forgot to mention as well that i always get this message anytime i drive the car ''Battery convenience functions temporarily unavailable" and it does go away after driving it around. I know a proper diagnostic is the only alternative to detect the problem but while waiting i would like to know if anyone on this forum has had some an issue and what was the remedy to the problem.
Thanks for reading and thanks for your anticipated responses
