Hi, my name isXXXXX you able to enter into the chat at this time?
Hi, can you post your vin number for me?
It's your 17 digit chassis number.
It's on your vehicle registration. I just need to confirm the model so I can look up the correct information on your car.
Ok, I am going to assume that you have a W220 chassis. If your locks are not working most likely the vacuum pump for the locks has failed or the fuse has blown. I'd check the fuse first. The fuse is located in the rear fuse box below the rear seat cushion. Fuse 62 is for the vacuum pump.
Click here for the fuse box diagram.
Do you know where the rear fuse box is located?
You will need to remove the footwell light below the rear seat cushion and access the fuses through there. On a US model the fuse box is on the right side. I don't know if that will apply to your car. If you remove the right side lamp and you don't see any fuses you will need to look on the left side.
You're quite welcome. I am in the US and do not know the dealers in your area. You can go to the Mercedes website and click on the dealer locater.
Click here for the dealer locater.