I know this is an old thread, but it has been an interesting read that resonates with my recent experiences.
A few months ago, my Twingo TCe sporadically wouldn't start at random times; the engine just didn't turn over. Then, one morning after not driving for a couple of days, the engine wouldn't turn over at all. Battery was completely flat. So, I recharged it.
After recharging, the engine started perfectly, but now:
• the orange spanner light was on
• gear change indicator didn't work
• no ECO mode functioning
• cruise control and speed limiter not working
Took it to the local Renault service centre who told me they would sort it. Whilst waiting for the appointment date, I scanned the car for error codes, and there was one Pending code, suggesting a problem with the turbo. Sure enough, when Renault did check the car, a problem with the turbo was found, and a replacement ordered. This was just before Christmas, and the part didn't come in until the new year.
Took my Twingo in for the replacement to be fitted... Wrong turbo had arrived; the correct one was on back order and would take 7-10 days to arrive. The service centre only realised it was the wrong part after stripping down the car, so now I am without my Twingo.
Three weeks on, still no replacement turbo.