For Mercedes cars testing. While car drive test is possible to stop (freeze) odometer counting. 

Plug and Play device with easiest connection way possible, no soldering is required in the installation process.

Works with :

• Mercedes C-class:  W205 V205 S205 C205 A205;
• Mercedes V-class: W447 with color LCD;
• Mercedes S-class:  W222 C217 A217 to year 2018,
• Mercedes GLC:  W253
  
• Mercedes GT/GTS: C190/R190,

Check twice for W447 V-class - if your car instrument cluster looks like in our photo - this SPEEDSTOP is for your car:

• MODE 1 ---> Push 3x Return button = Odometer freeze, Speedometer not works. 

• MODE 2 ---> Push 3x Return button = Odometer freeze, Speedometer show actual speed ( Speedometer working! ). In MODE 2 you have possibility adjust speedometer scale. If speedometer shows car speed lower then the real car speed, push "Arrow UP" button on steering wheel while driving. After 3s speedometer pointer will start slowly go UP. Release "Arrow UP" button when pointer will reach actual speed. Same with "Arrow DOWN" button – you can adjust speedometer pointer to lower side by pushing "Arrow DOWN" button for 3s.

•  ---> Push 3x Return button = back to normal mode.

  After Ignition OFF/ON SPEEDSTOP keeps selected working mode.