An OBD tool with a 16PIN connector designed to plug 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 proper operation. The maintenance mode switch can be restored (with settings at 25%, 50%, 75%, or 100%). During this process, the BUSY indicator light will flash, and the device will emit beeping tones. 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 related to exceeded operation time of component A7/3 (hydraulic unit). This internal control unit fault typically requires module replacement; however, using this tool allows for repair without replacing the entire control module. For safety, deactivate the Sensotronic Brake Control system before performing brake system maintenance on W211 (E-Class) and R230 (SL-Class) models. Deactivation must be done prior to any brake serviceincluding pad, disc, or fluid replacementsince the system operates under high pressure (up to 140 bars). Proper tools are essential to prevent personal injury and brake system damage. This lightweight, safe, and easy-to-use tool offers a cost-effective alternative to the STAR-DIAGNOSIS tester for deactivating the brake system, providing reliable and efficient 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 variations between the product color in images and actual color. Measurement error allowance is +/- 1-3 cm.