B200 Turbo Starting problem - Mercedes-Benz Forum

 
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post #1 of 3 (permalink) Old 10-08-2016, 11:32 AM Thread Starter
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Vehicle: 2007 B-Class Turbo 200
Location: Quebec, Canada
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B200 Turbo Starting problem

For the first few days, my B 200 turbo is having starting problem. Never happen during the warm weather. Every morning it struggles to start. It only works either when I press brake or gas pedal. sometimes it shuts off after it start. Already changed the genuine battery. Alternator is fine too. I have no clue where to bring the car for repair here around Laval or Montreal area.
Help/suggestions will be appreciated.
Thanks.
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post #2 of 3 (permalink) Old 01-07-2017, 04:35 PM
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I have starting issues with my 2008 B200 Turbo. It seems show up when the battery voltage is a bit lower. I have a new battery in there but sometimes after sitting for a few days or when it is really cold out the voltage shows 12.1V. This is when I get problems. Turn the key and nothing... no click from the starter. The batt voltage does drop though. If I charge the battery up a bit to 12.3V everything is fine.

I read on another post that there is some corrosion that I should clean up but don't know where.

Also, how is your voltage when the car is running? Mine jumps around. So much so that the LCD screen doesn't show a clear number after the decimal point. 14.4V is normal but it jumps between 14.2V to 14.6V. Is this a voltage regulator problem? Can it be changed independently from the alternator?

I don't mean to hijack your post! Maybe you have similar problems?
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post #3 of 3 (permalink) Old 01-08-2017, 07:53 AM Thread Starter
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Location: Quebec, Canada
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Quote:
Originally Posted by Eric Parry View Post
I have starting issues with my 2008 B200 Turbo. It seems show up when the battery voltage is a bit lower. I have a new battery in there but sometimes after sitting for a few days or when it is really cold out the voltage shows 12.1V. This is when I get problems. Turn the key and nothing... no click from the starter. The batt voltage does drop though. If I charge the battery up a bit to 12.3V everything is fine.

I read on another post that there is some corrosion that I should clean up but don't know where.

Also, how is your voltage when the car is running? Mine jumps around. So much so that the LCD screen doesn't show a clear number after the decimal point. 14.4V is normal but it jumps between 14.2V to 14.6V. Is this a voltage regulator problem? Can it be changed independently from the alternator?

I don't mean to hijack your post! Maybe you have similar problems?
I noticed it is around that numbers 14.2-14.5 when the car is running if I am not wrong. During these cold days when the car leaves unused, I used NACO Genius to charge my car. If the number is around 11.2, my car won't start at all. When it is around 11.5-11.9, the car started with no problem. Many people mentioned battery are never fully charged until the car is fully driven. But I saw the numbers jumps up to around 14.2 when I started the car, meaning alternator definitely starting doing something but never able to fully charge.
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