Uploaded August 2017 | Updated September 2026, 2 weeks ago
Link to purchase product: x8r.co.uk/mercedes-comand-controller-rotary-switch-button-scroll-knob-shaft-repair-fix-kit.html?utm_source=youtube&utm_medium=social&utm_campaign=analytics
The Problem
A plastic shaft within the scroller knob unit snaps causing the scroll function to no longer work on the screen.
It is a common fault on these vehicles for the comand controller knob to stop functioning correctly. A poor-quality plastic shaft within the controller knob unit snaps. This causes the common symptom of the scroller rotating as normal but for there to be no reaction on the screen. If all other functions are working except the scroll this indicates this shaft has deteriorated and snapped, this is an extremely common fault. Mercedes Benz fix is to replace the complete knob and button unit, this is extremely expensive and would only fail again.
Symptoms of the fault
Knob rotating but no response on the monitor. Knob works up-down-left-right but no rotation. When the wheel is turned, no reaction on the screen will be shown. All other functions such as confirming and tilting the controller are given.
Vehicles affected and compatibility
C-Class W204, C204, S204.
CLA-Class C117, X117.
E-Class W212, S212, A207, C207.
CLS-Class S218, X218.
GLK-Class X204, X218.
SLK-Class R172.
Associated part numbers:
A2048700779,A2048700879, A2048702058, A2048702158, A2048704558, A2048704658, A2048707458, A2048707558, A2128702851, A2128702951, A1728701258, A2048700179, A2128701351, A2128701451, A2128701551, A2128702751, A2048707658, A2048707758, A2048708851, A2048708951, A2048700579, A2048700679, A2048701258, A2048709558, A2048709758, A2048709958, A212870275, A2048700779, A2048702058, A2048700779, A2048702058.
This information is for guidance only, please inspect your comand knob unit to ensure compatibility.
Our solution
Restore full function with our replacement metal shaft.
Our part allows you to replace just the shaft within the knob unit which fails, without having to replace the complete unit at vast expense which would just fail again. Our shaft is CNC machined from billet aluminium then anodised. Beware of 3d printed, plastic and cast metal parts which could fail again. Our part will last the life of the vehicle. Using our part replace just the component that fails with an improved design part and restore full function permanently.
You will receive:
1X Replacement CNC billet anodised aluminium rotary shaft.
Link to purchase product: x8r.co.uk/mercedes-comand-controller-rotary-switch-button-scroll-knob-shaft-repair-fix-kit.html?utm_source=youtube&utm_medium=social&utm_campaign=analytics
The Problem
A plastic shaft within the scroller knob unit snaps causing the scroll function to no longer work on the screen.
It is a common fault on these vehicles for the comand controller knob to stop functioning correctly. A poor-quality plastic shaft within the controller knob unit snaps. This causes the common symptom of the scroller rotating as normal but for there to be no reaction on the screen. If all other functions are working except the scroll this indicates this shaft has deteriorated and snapped, this is an extremely common fault. Mercedes Benz fix is to replace the complete knob and button unit, this is extremely expensive and would only fail again.
Symptoms of the fault
Knob rotating but no response on the monitor. Knob works up-down-left-right but no rotation. When the wheel is turned, no reaction on the screen will be shown. All other functions such as confirming and tilting the controller are given.
Vehicles affected and compatibility
C-Class W204, C204, S204.
CLA-Class C117, X117.
E-Class W212, S212, A207, C207.
CLS-Class S218, X218.
GLK-Class X204, X218.
SLK-Class R172.
Associated part numbers:
A2048700779,A2048700879, A2048702058, A2048702158, A2048704558, A2048704658, A2048707458, A2048707558, A2128702851, A2128702951, A1728701258, A2048700179, A2128701351, A2128701451, A2128701551, A2128702751, A2048707658, A2048707758, A2048708851, A2048708951, A2048700579, A2048700679, A2048701258, A2048709558, A2048709758, A2048709958, A212870275, A2048700779, A2048702058, A2048700779, A2048702058.
This information is for guidance only, please inspect your comand knob unit to ensure compatibility.
Our solution
Restore full function with our replacement metal shaft.
Our part allows you to replace just the shaft within the knob unit which fails, without having to replace the complete unit at vast expense which would just fail again. Our shaft is CNC machined from billet aluminium then anodised. Beware of 3d printed, plastic and cast metal parts which could fail again. Our part will last the life of the vehicle. Using our part replace just the component that fails with an improved design part and restore full function permanently.
You will receive:
1X Replacement CNC billet anodised aluminium rotary shaft.
