W211/R230 ABS/SBC Tool for with OBD 16PIN connector into the vehicle's OBD-11 communications port. Turn the ignition switch to ON, then the OBD for TOOL light will illuminate, and the device will emit a tone indicating it is working properly. The maintenance mode switch can be restored (25% - 50% - 75% - 100%) and during this process the BUSY indicator light will activate. The device will beep to confirm operation, and data recovery completes within 10 seconds, indicated by the BUSY light. This W211/R230 ABS/SBC Tool is designed for models W211 and R230 equipped with ABS systems. Diagnostic code C249F indicates that the operation time of component A7/3 (hydraulic unit) has been exceeded, pointing to an internal control unit fault. This tool allows for repair without replacing the control module. For safety, before performing brake system maintenance on W211 (E-Class) and R230 (SL-Class) models, the Sensotronic Brake Control (SBC) system must be deactivated. Deactivation is required prior to brake pad, rotor, or fluid replacement due to high system pressure (up to 140 bars). Proper tools are essential to prevent personal injury and brake system damage. This tool provides a cost-effective, lightweight, safe, and easy-to-use alternative to the STAR-DIAGNOSIS tester for deactivating the SBC system. It performs deactivation efficiently and safely. Color: Green Material: Plastic + Electronic Components Package Contents: 1 x W211/R230 ABS/SBC Tool 1 x OBD2 Cable 1 x CD Software Only the items listed above are included. Other products are not included. Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3 cm.