Imobilizer is turning engine off while starting...

[pechecanadienne]

Let me start by saying I am not car savvy. I unarmed the car, got in and tried to star the car. The red and green lights came on so I armed the vehicle again. After disarming I tried to start again. It tried but the red and green lights came back on and killed the engine. Did this a few times. Haven't a clue and was supposed to collect my dog tonight.....:-( Please help.:cry:

 

[pechecanadienne]

This is a C200 N Reg, orginal Mercedes alarm/imobilizer -I think. Could it be the battery in the key/alarm?

 

[Ron Palfrey]

From what you have said it sounds as if your remote is unlocking the doors OK? If that is so then it sounds as if your remote batteries have some life in them.

My alarm is an aftermarket Scorpion one and when it lost its way I had to have the immobiliser/alarm unit out from behind the glove box, unplug all the connections to it, leave it for a minute or two, plug it back in to the connectors. By doing that it reset itself and worked again to the remote.

Mind you, I don't trust it any more and don't bother with setting the alarm/immobiliser. I just lock it on the key nowadays. Took the remote off the keyring and hid it somewhere so I don't forget not to use it.

My car is a 1994 C280. The aftermarket alarm/immobiliser is the only problem with it. I thought with a 12 year old car the chances of having it nicked are minimal.

Ron