Are you having problems with your Renault? Let our team of motoring experts keep you up to date with all of the latest Renault issues & faults. We have gathered all of the most frequently asked questions and problems relating to the Renault in one spot to help you decide if it's a smart buy.
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There is a fault associated with the auto transmission and the warning light is indicating as such when it comes on. The fact that loses power suggests that it is going into limp home mode, which is designed to give you enough power to drive on to a mechanic or dealer. That it isn't on when the mechanic checks it says that it is an intermittent fault, which can be hard to trace. I would take the car to a Renault specialist and have them check it.
As everyone is in furious agreement that the diff is noisy it would seem you would have a good case to claim against Renault for a new diff and I would pursue that course.
Your description of the problem suggests it's not an ignition problem, so changing plugs etc was probably a waste of time and money. I'd be investigating the fuel side of the equation, looking for things that might be making it lean at low throttle openings as you would be when cruising. Is there an air leak that's affecting the mixture strength, or something like that. Having said that, it could be a sticking valve as the mechanic has diagnosed, but I would expect to be able to see that on a compression test. If it is a sticking valve the only to know for sure is to take the head off and physically check it.
It really comes down to what you are comfortable with. Renault does send its mechanics and technicians overseas for factory training so they should be armed with knowledge to fix whatever problems owners have, but you do pay a price for that. My advice would be to use the dealer while the new car warranty is current, but then switch to a reputable mechanic after that, one that preferably has knowledge of Renaults.
Repainting your car would effectively return it to new condition, not to the condition of an eight-year-old car, which is why Renault is paying for the half the cost. If you want to pursue it contact an independent specialist in the area, like Graeme Cuthbert (0422 444 335) and arrange for an independent assessment of the car and take Renault to court. By far the easiest and most stress-free path to take is to accept the offer and get rid of the car.
Tyre makers typically replace their tyres every three years or so and you can run into problems like you have with your Laguna. You could buy one tyre of the new type to replace the punctured tyre, and legally run it on the rear. You could also fit the new tyre to the spare and fit the original spare to the car.
Renault's offer is standard practice within the industry. The amount they pay is based on the age of the car, and the use you have had of the failed part until it broke. What they are saying is that they can't fit a part that is four years or so old and done 100,000 km or whatever your car has done, and by fitting a brand new part they are returning the car to new condition. In effect you are being asked to pay for the use you have had of the old part. It might be frustrating, but it's as good a deal as you are likely to get and I would go for it. The alternative, if you're up for a fight, is to seek advice from Victorian Consumer Appeals Tribunal (VCAT).
Now that it's out of warranty I would suggest you seek out a Renault service specialist and talk to them about it. It sounds as though it could be going lean when you give it a sudden burst of throttle. I would be cleaning the throttle body.