My renault espace mk3 will not start, has an immobiliser fault. The light on the dash stays on constantly, engine turns over but will not start . I've been trying to get hold of wiring diagram to test wiring. Also have been unable to locate the engine ecu or the decoder.

spring loaded pulley .just to right of the crank pulley and its a 14 or 15mm ring spanner with a heavier one on the end looped in and the nut you turn anticlockwise to slacken the pulley ,be carefull as if the spanner slips it will wack your hand with a force .Later models as this espace could ba old one as no year stated ,sideways or foreward facing engine ??

try using a scan tool to reset the ECM
having a battery disconnect for any length of time can corrupt the CPU program in the ECM

hi. i have a renault espace that not start. i make the card in and only windows can i open. nothing else. i change the plastic of card reader and the same

My guess is the problem either lies in the wiring between the decoder and the fuel solenoid ,the solenoid itself or the decoder. I would start by checking the connection blocks under the decode then do a safe continuity test from the said plug to just infront of the fuel solenoid, with the decoder and solenoid disconnected. You can't test the fuel solenoid wiring without an osiliscope??? Or the right diagnostic tool, a trusted Renault electrical engineer has the right kit to test though. You could try taking the solenoid out and visually testing it or taking or sending it to a Renault specialist? I don't joy the price of one, so it night be cheaper to just replace it anyway? It's not an easy job though for the uninitiated! If all that doesn't solve it then it's the decoder box I would reckon with that immo configutheration, on constant! If you need a decoder then if you don't want a heavy bill then it's a trip to the scrap yard for two keys, ring, door lock, decoder, brain and barrel! The other route is pay the Renault guys to run a diagnostic service only. I hope this helps you still? Different configurations of unusual immo light are tell tales to different faults and not the same on different renaults! Sorry mate if you were expecting an easy fix. Pete.

probally be a good idea to have a local shop run a fuel system check to eliminate alot of wasted time or money. its well worth the time to have it properly checked by a trained mechanic. alot of engine problems the computer picks up wont be noticed at first and can lead to expensive repairs

hi abs light indicating you have sensor down on brakes or master cilinder is on its way out,try checking sensor will need to go to a back street garage cheaper

fuse porblems

Don't waste your money on
unnecessary sources and unwanted repairs.. get this manual online at www.reliable-store.com get complete guide on whether to repair or not, service it, and how to repair etc

Try www.cartronix.co.uk they can repair the renault megane scenic dash and the renault espace instrument cluster for £140 inc postage and only takes 2-3 days. Their number is 07970 075414.