Date registered: Dec 2002
Vehicle: 92 500SEL to 01 E320T current 2014 lexus LS460
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Quoted: 3 Post(s)
RE: Mercedes MBZ Keyless Entry Remote SMART KEY / SMARTKEY
The key is programmed by MB from their database, It is ordered as a "new" add-on or a replacement. The replacement wipes out the old one, my dealer (or someone)ordered a replacement and it wiped out my good one. They ordered two more. The key itself will unlock the doors but has to teach the body computer its identity. The batteries in it are only used to lock/unlock. The ignition portion is inductive energy and communicates both the start and unlock portion.
These keys can take up to 45 minutes to sync. In my case it would not turn for 20 minutes, then it would turn and start, but not keep running. The final result was that it kept on running, but had wiped my other good remote. The stuff you get on E-bay is only for "show" or your housing is scratched. Even the dealers have problems sometimes and after 24 changes certain components have to be replaced.