Date registered: Oct 2003
Vehicle: 500SE AMG, E350 4matic, GL 450
Mentioned: 0 Post(s)
Quoted: 78 Post(s)
Do a search of the w163 forum. I would replace the battery in the key. If that does not work, replace the battery. It is a dealer only part. I think it was about $130 or so. Instructions to replace can be obtained by searching the 163 forum. Key battery you can get from Radioshack. BTW, if you call 1800mercedes ( I thinK, its in the owners manual), the roadside assistance will replace your car battery with no charge for labor.