An OBD tool with a 16-pin connector that plugs into the vehicle's OBD-II communication port. Turn the ignition switch to ON; the OBD tool light will illuminate, and the device will emit two beeps, indicating the device is functioning properly. The maintenance mode switch can be restored (25% - 50% - 75% - 100% adjustable), at which point the BUSY indicator light will flash and the device will emit beeps. Data recovery completes within 10 seconds, indicated by the BUSY light. Compatible with W211 and R230 models equipped with ABS systems. Addresses repair code C249F: "Operation time of component A7/3 is exceeded (Hydraulic Unit)." This code indicates an internal control unit fault. The control module can be repaired using this tool without replacement. For safety, before performing brake system maintenance on W211 (E-Class) and R230 (SL-Class) models, the Sensotronic Brake Control system must be deactivated using a diagnostic tester. System deactivation is required before any brake service, including pad, disc, or fluid replacement, as the system operates under 140 bars of pressure. Proper tools are essential to prevent personal injury and brake system damage. This lightweight, safe, and easy-to-use tool provides a convenient alternative to the STAR-DIAGNOSIS tester for deactivating the system. It performs the required functions efficiently and safely. Color: Green Material: Plastic + Electronic Components Package Contents: 1 x W211/R230 ABS 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 differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement error allowance is +/- 1-3 cm.