Smartkey question

I have Keyless GO and the battery was drained. I had to open the door with the little metal key that goes into the Smartkey. I then opened the trunk with the key and jumped the battery. After a few minutes of charging from the jumper I was able to use the Smartkey to crank the car. The Keyless GO would not function however.

I have run the battery down twice because the Xenon lights were left on. I would think that MB could put a chip on the battery to shut them down when reserve goes below a prescribed level. I guess that would be to much to ask however. I just put a jumper box in my trunk to prevent this from happening again.

Rob

Sorry I wasn't too clear... what I meant is that if my SmartKey's battery runs out, can I still start my car (assuming my car battery is still ok)

Thanks, Tony

Vetluver wrote:

I always believe MB should make a car smarter than MB's engineers. A smart battery would definitely a good point for an expensive car's standard equipment. Recently I found some Japs car's design has nearly overtaken German's. Look at a Lexus GS 300, I would ask myself why my C-class doesn't have this doesn't have that.

Keith

"TN" ??? news: snipped-for-privacy@yahoo.com ???...

Why don't you buy a spare battery for your smartkey and keep it in your glove compartment? That way you can use the mechanical key to unlock the door then change the battery in the smart key. Bingo

Dunno but it can survive an hour through a full-cycle whites 60C washing machine, then forty minutes in the tumble-dryer, and still work fine :-)

I think that it can. The power source is in the ignition itself. Why not take the battery out and see?

Yes. The ignition switch socket will induce the necessary power for either the standard Smartkey or the flat (no-battery) wallet key (spare) to work. The only thing the battery is really needed for is to remotely open/close the doors, trunk, etc.

IIRC, while the code changes with each use (and each key), the car's program is allocated a block of 8 key identifier codes. If a Smartkey is lost or damaged, the replacement is based on the remaining identifiers available (as you want to remove the "lost" key's ID code from the car's program, so as to prevent a rogue "finder" from using it to access the vehicle). When all 8 identifiers have been used, another block of 8 must be allocated.

Paul

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Yes, it is powered by an inductive coil which picks up a signal transmitted by the ignition switch, take your batteries out and try it.