Mercedes W202 remote replacement and immo bypass

[MiniDan]

Hi guys,

I'm having a little trouble with my Mercedes C250D (W202).

The keyfob was knackered, so I brought a replacement off eBay. Took the original apart and fitted it into the new fob. Part of the casing is taller in the new one than the original and it's broken the solder connecting the IR led to the board. I've temp fixed this with some tinfoil but it's starting to become a pain to turn the immobiliser off.

Does anyone know how much it would be to have a new fob programmed from the original? If so, where from? It is a single button fob, like this:


In the mean time I'd like to remove the immobiliser. I know that it's possible to remove it, but (quite rightly) I can't find the info anywhere on the internet. Can anybody let me know how you go about it please via. PM obviously.

[Rev. Dick Deluxe]

If you have the old fashioned pump with the fuel cut off valve you can just bypass it. If you have a cdi engine with wsp then its a case of rewritting the ecu epprom.

[MiniDan]

I'd guess it'd be the old fashioned pump.

Here is a picture if it's any good to you?

[Rev. Dick Deluxe]

Yeah it looks like the old inline pump. On the side there should be an inline solenoid valve in the fuel line between the filter and the pump. If you bypass this then your immobilser will no longer immobilize. We used to take them off and drill the guts out.

[westyxflow]

MiniDan, I have a w202 of similar age to yours, with the same type of key.

I was under the impression that the alarm/immob was a retrofit by the uk dealership network and was made, i think, by scorpion (ie, it's not MB). This would mean that the block key just remotely unlocks the car via central locking, and the central locking being activated then disarms the alarm/immob?

Because of this, i wonder if it's just a question of going through the synchronising procedure in the handbook with a new block key, rather than having it programmed as such?

Would be interested to know how you get on

[tommy300ce]

It was a box under the steering column on my vito I just bypassed it to get the cl working again. On my ce its a scorpion which I have yet to dispose of under the bonnet and bright red in colour.

[MiniDan]

Cheers for the replys guys.

I've had a look round and the only places I can find that sell the fobs and internals want the original sending too and they'll copy the frequency onto the new fob. £70 though