Hello, my name is XXXXX XXXXX I will try help you with this.
This has the potential to be a problem. If it were to get any worse it could stop the engine from starting. If your friend has a spare key with him, ask him to try that to see if the fault remains.
He should try get to the nearest Renault garage to have it checked over as soon as possible.
can we get a key from any shop that does car keys or does the immobiliser require a special key from Renault? Don't have a spare
The key has to have a transponder chip in it that is then programmed to the vehicle.
Some locksmiths can provide these keys but Renault would be the best option.