Thanks Adam and we'll done again for getting your car sorted. MB HQ as useful as a chocolate teapotThe fix was to add the new knuckles (i think that is right). Car was in all day.
The garage was a dealer - MB HQ only passed me on, but I explained the issue to them, they sent me to my local Merc dealer (where I bought the car).
As I bought it from them, I imagine that massively helped my case, as a private purchase probably wouldn't of led to the free fix.
It was a used car, outside of the 3 yr manufacture warranty, but the 1 yr used warranty apparently doesn't cover it, so this was categorised as a gesture of goodwill.
Good morning. Thank you for our replySawasdee khrap. Here in the UK we are getting the modified steering knuckles fitted under warranty. It is not being handled as a recall, you have to request it and your Dealer will seek approval from MB UK. I'm surprised you are experiencing the tyre skipping phenomenon given the average temperature in Thailand but maybe you have very low profile tyres fitted. Here in the UK MB the problem only really manifested itself when the weather got cooler. The first solution was for MB to offer replacement tyres with a more pliable rubber compound to absorb the lateral forces being exerted by the incorrect steering geometry found in RHD cars. But as the tyres wore down or the weather got even colder the problem manifested itself again so a revised steering knuckle was devised to correct the geometry. I think Thailand probably has fewer GLCs than the UK and, with the warmer climate, there has been less complaints for MB to consider it a significant problem. If you decide to fund the retrofit yourself, I have itemised the part numbers used over in the dedicated steering knuckle thread here:
Steering Knuckle Anti-Clonk Fix
Hi TonyOurs is a 250D AMG Line on 20” wheels. After 12k miles the original front tyres were completely worn on the outer 2 inches. Complained but dealer said it was normal for a heavy car - bs.
MB UK then fitted All Season tyres FOC. Claiming this would stop the crabbing, it didn’t, but was slight improvement while on new rubber - flex in new tyre absorbed and masked the Crabbing.
After 3 years MB HQ came up with the New Knuckle Fix, FOC Another improvement and makes the car acceptable, but not 100% fixed
To answer your question - the replacement All Season RF tyres have now done 20k miles and still looking good with even wear. So the New Knuckle Wheel Alignment has made a big improvement to Crabbing and tyre wear.
Definitely have the fix done if you are planning to keep the car for a few years. It will pay for itself just in tyre costs.
Make sure the dealer does a Full Wheel Alignment check after fitting the new knuckles - essential!
Hope this helps
Tony
hi John I know exactly what the problem is as I’ve had it myself with my 220d GLC 2018. I haven’t read the rest of the replies so someone may have already said.Mercedes GLC Clonking and juddering on near full steering lock
I have had this problem since new but now the weather is cold and damp or wet the problem is much worse. I have viewed other owners concerns about this phenomena and would like to document my experience.
The car has been with the Mercedes dealership and they have coated the drive shafts with a lubricant to hopefully reduce or remove the problem.
The service manager told me that the clonking noise is from the tyres and another manager told me the car is trying to drive straight ahead (whilst in a turn) and it is the scrubbing of the tyre on the road which is causing the noise and the judder.
The service manager told me the car is safe to drive. However, I'm not so sure.
If I need to turn sharply to avoid a collision I do want the car to turn and avoid the object rather than juddering towards the object.
My wife has said that she would not drive the car until the clonking and juddering was eliminated as it does feel and sound bad when it occurs.
Over the next few days I will check if the lubrication coating has any effect on solving the problem.
I would like to hear the latest situation with regard to all those owners who have the same problem. I.e. is there really a fix or is it a inherent design fault.
John