Hi all, hoping someone here knows where I should be looking:
My 1999 CLK430, was working fine. But then all of a sudden the next time I go to start the car, nothing happens! I've done some searching, and lots of people will talk about the EIS, but I think my issue is happening before power even gets to the EIS. Luckily I'd left the car unlocked.

What works:
-Dash comes on when I open the door, and shows the mileage, etc.
-The headlights. Even beeps at me if I've left the door open.
-Interior lights, when I press the buttons
-Radio
-Hazard lights

What's not working: (everything else!)
-The keyfob won't unlock the key positions. There's no unlocking noise, can't turn the key to the engine-on position.
-Central locking doesn't work. Doesn't respond to keys. The buttons on the console to unlock the car or the boot do nothing.
-The power seats don't work.
-The power mirrors don't work.
-The power windows don't work.

I've checked the fuses both in the engine bay, and in the boot.
Neither of my 2 keys work. (Both regularly used.)

Anyone know what might be the issue?

'regards,
Simt

I believe you need to trace power supply is going to eis etc, the first place to check is passenger footwell, remove carpet and metal plate to expose where I think fusable links and battery wires are terminated. This area can suffer from trans oil coming up through the wiring. Hope this helps.
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Hey,
thanks for that suggestion. Had no idea that was a place to look.
I've now checked all the relays. Unfortunately they're all good. So now I need to get more into trying to trace power. I've found a few electrical diagrams for the W208. Haven't thoroughly gone through them yet. Hoping to find a common point that makes sense for the systems that aren't working such as the central locking, and EIS.