2020Lexi

Thanks, yes definitely, the plugs are fairly well corroded (and hoping they'll come out!!), so getting replacement plugs and gaskets ordered tomorrow!

Thanks Steve, very useful to know, I've managed to find some is200d diffs on fleabay so will have a look at the part numbers to compare. Originally I thought it would be the wheel bearings, but have been told these are fine. Will be getting the jack under the car at the weekend so will have a listen to the wheel bearings and diff.

Thanks James, I'm looking to do the oil change myself as it looks relatively simple to do, hoping for a cheap fix!

I have a 2011 is200d with a whirring coming from the rear and have been informed its coming from the diff. Although my garage hasn't had a look at the diff they've suggested it's the diff bearings. Would a diff oil change help or possibly solve the issue? I've had the car 18 months but don't know when the diff oil was last changed - car is at 155k miles. My garage has suggested the oil change won't make a difference. If the oil change didn't solve it I'd look at a recon diff, but can't find any is200d diffs, only is220d diffs. Do both models use the same diff? My garage is also looking at getting the diff reconditioned, but might be cheaper if I can get a recon diff of the shelf. Any help for this would be gratefully received! Thanks Andy