Mercedes-Benz MB CAN Filter is able to filter the km synchronization command between the cluster and the EZS module. There are two MB CAN Filters available in obdexpress.co.uk.
MB CAN Filter 5-in-1 for W221 W204 W212 W166 and X166
MB CAN Filter 8 in 1 for W221 W204 W212 W166 X166 W172 W218 W246
Here is the MB CAN Filter 8-in-1 connection operation video instruction:
Here are some connection & installation photo screenshots of the MB CAN Filter 8-in-1 box.
CAN Filter 8-in-1 share the similar operation way: