The central locking operates in 2 ways on this mercedes.
Mercedes infrared door sensor.
I have a w203 coupe that had dodgy central locking.
Ir door sensor repair mercedes w203 c class.
Posted on march 15 2017 by admin.
But in your case i don t think is the infrared sensor because the remote would transmit duplicate signal in the forms of radio frequency and infrared.
Get it as soon as sat feb 8.
Sometimes i have to walk right up to the door to unlock it.
My 1997 e320 keyless door entry system is weak.
However when in the rain the system doesn t work.
The green led actually looks a lot less green.
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The driver side door handle where the red and green lights reside the plastice protective film has disintegrated and we put some scotch tape over the lights to protect them.
I can tell you the range on the remote is the worse i have seen.
You should try to change the battery first.
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The infrared sensor on my driver side door works intermitently.
Also the last time the car was in for servicing may 2010 the mechanic indicated the ir sensor system was weak.
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