i have a problem

Hello Adrian,

Sorry to hear that you are suffering a problem so far away.  I would have expected the garage to have, at the least, check the oil level in the diff.  If this has not been done, have the levels checked out. 

I would suspect a wheel bearing problem rather than the diff. particularly given you can feel vibrations at the steering wheel.  The noise does not seem healthy, put it this way, I don't see it getting better.

Have you breakdown cover, if so get the vehicle recovered to the UK.

Should you wish, given a local address, I can try to get the French G-Wagen club to try and give advise at which garage to go to. I am or was on skype, just need to renew my details to come back on, if that is convenient to speak to me. I am back on computer in the afternoon tomorrow.  In the morning, I am not available.

Let me know if you want support from this end.  I will PM, you, my email address.

Cheers,