Well I just replaced the car and key fob battery. However the sunroof, Dimming function on rear view mirror, interior front light, mirror lights garage door opener still don’t work oh and I still have to go right up to the door to lock and unlock the car. I’ve checked for corrosion under the water tank and it looks good. Is there any way of checking the K40 relay?

Thanks!

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98 E320 175,600m
99 ML320 175,500m
as of 12/2012