Key won't open door or start ignition

[dm44]

Hi Guys,

Bought a clk200 coupe 2009 few weeks ago. Today the remote key/fob wouldn't open door so got in using the metal key. First I was about to switch dashboard but after trying to start engine the dashboard died. Now the key won't even turn.

I have two remote keys and neither work. Read somewhere about steering lock and I tried moving it while attemping to ignite but no luck.

Anyone face similar? Any suggestions? I want to check the fuse but I can't see key hole in the boot. I'm really stuck

 

[ansta1]

Failed EIS possibly. Speak to RMK

 

[dm44]

Thanks for getting back. Apologies for my ignorance, but what is EIS? And who would RMK be?

I wanted to check my fuse as I read someone had a similar issue to mine and they solved this by changing the fuse - do you or anyone else know where this would be located?

 

[bob 6600]

Both run on separate systems so strange both would fail (locks and ignition)

EIS is the ignition system. I wonder if the ESL (electronic steering lock) has failed? But then coincidence on the fob not working.

RMK are www.replacementmercedeskey.co.uk and are supporters/members here

 

[dm44]

Thanks. I have two remote keys and both suddenly stopped working...so I don't think the key is the issue which is why I thought maybe it could be dead fuse. Is it possible the car battery to have died? Would that stop the keys to function?

 

[bob 6600]

Thanks. I have two remote keys and both suddenly stopped working...so I don't think the key is the issue which is why I thought maybe it could be dead fuse. Is it possible the car battery to have died? Would that stop the keys to function?

Yes. Could well be the issue

 

[Submariner1]

Thanks. I have two remote keys and both suddenly stopped working...so I don't think the key is the issue which is why I thought maybe it could be dead fuse. Is it possible the car battery to have died? Would that stop the keys to function?

I had one key do exactly that, went to the backup key but it wouldn't open door or start car.
Called Mobilo breakdown suspecting ign switch .. EIS and lord knows what else.

They found my normal key was kaput. Taking out the batteries as it had a slight rattle, and a bit off one of the thingies on the pcb board had come off!
Suspected the key had been dropped ... has yours?

As for the backup key ... drrr that had a flat battery! .. strong enough to get the little red light to blink when you pressed any button but not strong enough to open a door or start the car or turn off the alarm when opened with the metal key.

Swapped batteries all good on second key, but Mobilo put in new batteries for me.
Bought new key at MD £££ s ouch.
( will try a repair on the broken one but needed one bombproof key )

And put those shock-absorbing neoprene slips on both.

 

[dm44]

Thanks for the replies/suggestions. It turned out my car's battery was completely flat. I have no idea why

At least - that was all. I just didn't think it would stop me from using the remote key to open the door!