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  #1  
Old 06-10-2009, 10:53 AM
jaybro
 
Join Date: Feb 2000
Location: USA
Posts: 52
Unhappy Central locking

On my 1999 w202 when I lock the car the front lights do not flash. When I unlock The car front and back flash. If I unlock and continue hold ing the button no responce (all windows do not open). I have checked all the fuses and all appear OK. Where do I go from here??? Is there a relay that could be the problem, located where?
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  #2  
Old 06-10-2009, 12:10 PM
ILUVMILS's Avatar
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Quote:
Originally Posted by jaybro View Post
....when I lock the car the front lights do not flash....

Do the rear lights flash? Does the car actually lock?

Whenever you're diagnosing central locking problems, it's a good idea to see if your spare key works.
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  #3  
Old 06-10-2009, 04:09 PM
jaybro
 
Join Date: Feb 2000
Location: USA
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central locking

Quote:
Originally Posted by ILUVMILS View Post
Do the rear lights flash? Does the car actually lock?

Whenever you're diagnosing central locking problems, it's a good idea to see if your spare key works.
rear lights flash, doors lock with the fob. Both lights flash when I unlock with the fob. The spare key works the same as the every day key. The switch on the console does not work either!
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  #4  
Old 06-10-2009, 09:49 PM
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Alright, it sounds like you may have two separate issues.

First, the car locks and unlocks, but the front lights don't flash when locking?

Second, the convenience opening/closing feature (windows and sunroof) doesn't work.

Is this right???
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ILUVMILS
MB Shop Foreman
MB Master Technician
MB Master Guild Tehnician 2007
Factory trained in NJ, PA, AL, CA, FLA,
and Germany
29 years and counting!

1994 E320 (wrecked)
2001 E320
2005 C240 4Matic Wagon
2000 E320
2000 ML320
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  #5  
Old 06-11-2009, 08:45 AM
jaybro
 
Join Date: Feb 2000
Location: USA
Posts: 52
Quote:
Originally Posted by ILUVMILS View Post
Alright, it sounds like you may have two separate issues.

First, the car locks and unlocks, but the front lights don't flash when locking?

Second, the convenience opening/closing feature (windows and sunroof) doesn't work.

Is this right???
Right on both counts
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  #6  
Old 06-12-2009, 12:19 PM
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There are several different components involved in the RF locking system. The component responsible for flashing the lights is the front SAM. It's kind of like a "smart" fuse box. I think you should try dis-connecting the vehicle battery before you go any further. This will perform a "hard re-set" of all the electronics. This can sometimes restore functionality to mis-behaving computers.
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ILUVMILS
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Factory trained in NJ, PA, AL, CA, FLA,
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1994 E320 (wrecked)
2001 E320
2005 C240 4Matic Wagon
2000 E320
2000 ML320
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  #7  
Old 06-14-2009, 10:00 AM
jaybro
 
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That appeared to solve the problem, Thanks a million.
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  #8  
Old 06-15-2009, 12:08 PM
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I'm glad it worked out for you. You'd be amazed at the types of wierd electrical problems that can be solved this way.
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ILUVMILS
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MB Master Technician
MB Master Guild Tehnician 2007
Factory trained in NJ, PA, AL, CA, FLA,
and Germany
29 years and counting!

1994 E320 (wrecked)
2001 E320
2005 C240 4Matic Wagon
2000 E320
2000 ML320
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