An OBD tool with a 16PIN connector designed to interface with 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 proper operation. This device supports maintenance mode reset functionality with multiple levels (25%, 50%, 75%, 100%). During operation, the BUSY indicator light will activate, and the device will beep; data recovery completes within 10 seconds while the BUSY indicator is active. Compatible with W211 and R230 models equipped with ABS systems. Addresses repair code C249F related to exceeded operation time of component A7/3 (hydraulic unit). This internal control unit fault can often be resolved using this tool without requiring replacement of the control module. For safety, it is recommended to deactivate the Sensotronic Brake Control system before performing brake system maintenance on W211 (E-Class) and R230 (SL-Class) models. System deactivation is essential prior to brake pad, rotor, or fluid service due to high pressure (up to 140 bars) in the system. Proper tools are required to prevent personal injury and damage to the brake system. This lightweight, safe, and easy-to-use tool offers a practical alternative to STAR-DIAGNOSIS testers for deactivating the brake control system, providing efficient and reliable performance. Color: Green Material: Plastic + Electronic Components Package Contents: 1 x W211/R230 ABS Tool 1 x OBD2 Cable 1 x CD Software Note: Light reflection and display differences may cause slight color variation between the product image and actual item. Measurement error allowance is +/- 1-3 cm.