This CAN Filter 18 in 1 is compatible with Benz and BMW models and is designed for use during odometer adjustment. For most chassis models, the filter should be installed after odometer adjustment. However, for W222, W205, and W447 models, the filter must be installed before adjustment.The filter is universal for multiple vehicle models, compact, easy to operate, and delivers stable performance and reliable operation.1. For Benz Models: Compatible chassis models include: S(222), S(221), C(205), C(204), V(W447), E(W212), E(W207), A(W176), G(W463), ML(W166), SL(R231), GL(X166), B(W246), CLS(W218), SLK(R172), SLS(W197), CLA(W117), GLK(X204). Note: New style: 222/205/217 Old style: 166/212/463 Verify the correct car model before performing mileage adjustment. For old style W166, short circuit to GND. For new style W222, short circuit to GND. Connect the black wire to plug 1.2. For BMW Models: Compatible with BMW CAS4 and FEM Fxx systems. Supports BMW 1 Series F2X, 3 Series F3X, X5, and other FEM modelsallows direct connection to the instrument cluster without removing the FEM module. For BMW 5 Series F10, 7 Series F01/F02, and other CAS4 Fxx chassis including F01, F02, F07, F18, F10, F20, F25, X3, compatible with 9S12 XEP series 5M48H/1N35H. Note: Short circuit the two BMW connection points before connecting to the vehicle.Color: Blue & Orange Material: ABS Actual product color may vary slightly due to lighting and display differences. This does not affect functionality. Package Contents: 1 x CAN Filter Note: The package includes only the items listed above. Light reflection and screen settings may cause slight color variations. Measurement tolerance is +/- 1-3 cm.