2018 Mitsubishi Pajero Pricing and Specs

First suspicions would be the body computer which controls all sorts of functions including central locking, indicators, dashboard, heating and central locking. The fact that two functions have disappeared together is what makes the body computer a great place to start.

An auto electrician should be able to diagnose the problem. The worst-case scenario is that you’ll need a new body computer model and will then have to re-sync the new computer to your existing keys. But don’t rule out a poor earth or even a battery that is starting to show its age.

If it was just the indicators or just the central locking, you could spend a long time figuring this out. But if both the indicators and the central locking went on the blink at the same time, any mechanic's suspicions would be drawn to the body computer. This is an ECU that controls all those functions, including cruise-control, heating and ventilation and much, much more.

If the computer unit fails or starts to behave erratically, you'll notice these functions either working intermittently or not working at all. In some cases, a new body computer will be needed, but you can try this trick at home. Disconnect the battery and leave the car overnight. You may find when you reconnect the battery, all the functions have been restored.

The other trick to try is to hold the lock button on your key fob for a minimum of 60 seconds. That, too, can often reset the body computer and reboot thigs back to where they should be. Failing that, it's off to an auto electrician.

The cost of a replacement key fob will depend on if you go to a dealer or locksmith as well as how old the car is. You can read our advice piece for more information on the best way to replace your car keys.