The older Ssangyong Rexton’s are now starting self immobilise themselves, They have a Cobra alarm and immobiliser unit fitted as standard and now the vehicles have started to get around 10-12 years old the small Cobra immobiliser unit can fail. This will be caused by the internal components in the immobiliser board or the Code wire getting a corrupt signal from the main alarm ECU control unit. Cobra is a very high quality alarm and if the unit lasts over 10 years it has given a very good service life. These can be removed from your Ssangyong Rexton but it is involved to remove from your vehicle to get it running again.
The reason behind the difficult to remove is the units are fitted at the Ssangyong production line when the vehicle was new meaning the looms are run very well and they are hidden very well. It can be removed after removing a great amount of trim and accessing wiring looms. Your Rexton will normally require a new alarm and immobiliser due to it already having a full Thatcham cat 1 as standard. If you do have it removed it is very responsibility to let your insurance company know instantly.