2003 Clio intermittent starting/electrical issues

[53CLI]

My 53 Plate 12v 1.2 Clio Dynamique was originally just having problems with all lights/indicators etc turning off at random but now i am having issues seemingly at random with starting the car, sometimes will turnover but then other times i will get absolutely nothing, any help appreciated

 

[Mbeau]

With the other electrical issues I would say you need a new UCH. Easiest thing to do is buy a new ECU/UCH and key from someone breaking the same car.

You can check the fuse box and relays in the engine bay for corrosion as that can also cause problems.

 

[Bankrupt_drunk]

Quick and easy check is the earth straps. Make they are securely attached and there ia no corrosion.