wardpaa
Senior Member
Wondering if anyone with an electronics background can offer any advice on why my new chrome key does not operate the immobliser on my 2005 CLK.
To briefly explain the situation, I have purchased a Chrome 3 button key off of Ebay with the intention of swapping the chip out of my old cracked key into the chrome one. The seller sells one of these keys a day and they are practically new.
After transfering the chip, the chrome key now does everything (IR and RF) to Lock/Unlock the car, remote windows, BUT, will not let me turn the EIS when inserted.
I have verified IR being transmitted from the EIS when the key is inserted but the key appears to be ignoring it - or could it be more work needs to be done ?
The donor key was working before I transfered the chip and I have a second cracked older style key that is fully operational -or i'd be stuffed.
I have tried swapping coils over, measured resistances etc, checked connections from every pin on the chip to where the track goes, shorts etc, but all OK.
Any teckies on here that know how these keys work and if a key previously programmed to another car needs more than one chip/components transfered or maybe a re-sync using software ?
PS
This all started on a thread on another site:
http://www.mbclub.co.uk/forums/electronics/74824-reprogramming-w208-keys.html
To briefly explain the situation, I have purchased a Chrome 3 button key off of Ebay with the intention of swapping the chip out of my old cracked key into the chrome one. The seller sells one of these keys a day and they are practically new.
After transfering the chip, the chrome key now does everything (IR and RF) to Lock/Unlock the car, remote windows, BUT, will not let me turn the EIS when inserted.
I have verified IR being transmitted from the EIS when the key is inserted but the key appears to be ignoring it - or could it be more work needs to be done ?
The donor key was working before I transfered the chip and I have a second cracked older style key that is fully operational -or i'd be stuffed.
I have tried swapping coils over, measured resistances etc, checked connections from every pin on the chip to where the track goes, shorts etc, but all OK.
Any teckies on here that know how these keys work and if a key previously programmed to another car needs more than one chip/components transfered or maybe a re-sync using software ?
PS
This all started on a thread on another site:
http://www.mbclub.co.uk/forums/electronics/74824-reprogramming-w208-keys.html
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