With this dongle it is possible to change the tire pressure monitoring display in the speedometer between kPa, bar and psi Suitable for the following vehicles A-Class series 176 A-Class series 177 EQA-Class series 243 B-Class series 247 CLA-Class series 117 CLA-Class series 118 C-Class series 204 C-Class series 205 E-Class series 212 E-Class series 213 CLS-Class series 218 CLS-Class series 257 GLA-Class series X156 156 GLA-Class series H247 247 GLB-Class series X247 247 GLC-Class series X253 253 GLC-Class series C253 253 EQC-Class series 293 GLE-Class series C292 292 GLE-Class series W166 166 GLE-Class series V167 167 GLE Class series C167 167 GLS Class series X166 166 GLS Class series X167 167 G Class series 463 from 2018 S Class series 222 S Class Coupé and Cabrio series 217 V Class series 447 Sprinter series 907 / 910 Vito series 447 Hymer B-Class Hymer ML-T Hymer Tramp S Hymer Free S Other models on request Activation and deactivation via your vehicle's diagnostic interface Simply connect the adapter to the vehicle's OBD interface - done! After successful coding, the tire pressure control is displayed in bar The function is not permanently activated, but can be reactivated at any time with the dongle Ex.: 1st use = display of the tire pressure control in bar 2nd use = display of the tire pressure control in psi 3rd use = reset to factory setting (display of the tire pressure control in kPa) 4th use = display of the tire pressure control in bar 5th etc. Scope of delivery: 1x coding dongle Notes: The coding dongle can only be used for one vehicle The vehicle must already have the tire pressure display code RY2/RY6/475