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paddyred · Apr 3rd, 2016, 20:48

Well its a shame that didn't work! Try again in the morning as the immobilizer can reset after 5 hours. It may be that you have a dodgy ignition switch that isn't picking up the transponder in the key. Theres a coil that's wrapped around the ignition switch that picks up the signal. Apparently these can go wrong after a while.

In any case, I would check the connections on the back of the CEM. Its unlikely but it if it works its a free fix. Disconnect the battery for over 10 minutes first (20 minutes if you can) and then pull the fuse box down from under the passenger side dash. Its behind the scraggy looking piece of carpet. After the two twist fasteners are undone you can drop the front down then lift the back and pull towards the rear of the car. It should now be dislocated from its hinge points. Disconnect all the large plugs you can see on it and have a look to see if they are corroded. If not then stick it all back and reconnect the battery (again, ignore the random faults) and try again. If they are corroded then some IPA and a small paint brush should clean them up. I also get a product called Deoxit shield to stop them corroding again if they are corroded when you take the plugs off.

Good luck!

Apr 3rd, 2016, 20:48	#4
paddyred Master Member Last Online: Jul 31st, 2021 13:08 Join Date: Feb 2013 Location: Exeter	Well its a shame that didn't work! Try again in the morning as the immobilizer can reset after 5 hours. It may be that you have a dodgy ignition switch that isn't picking up the transponder in the key. Theres a coil that's wrapped around the ignition switch that picks up the signal. Apparently these can go wrong after a while. In any case, I would check the connections on the back of the CEM. Its unlikely but it if it works its a free fix. Disconnect the battery for over 10 minutes first (20 minutes if you can) and then pull the fuse box down from under the passenger side dash. Its behind the scraggy looking piece of carpet. After the two twist fasteners are undone you can drop the front down then lift the back and pull towards the rear of the car. It should now be dislocated from its hinge points. Disconnect all the large plugs you can see on it and have a look to see if they are corroded. If not then stick it all back and reconnect the battery (again, ignore the random faults) and try again. If they are corroded then some IPA and a small paint brush should clean them up. I also get a product called Deoxit shield to stop them corroding again if they are corroded when you take the plugs off. Good luck! __________________ Wax On Wax Off!