An OBD tool with a 16-pin connector designed to plug into the vehicle's OBD-II communication port. Turn the ignition switch to ON; the OBD tool indicator light will illuminate, and the device will emit two beeps, indicating proper operation. This tool allows for resetting the maintenance mode switch (adjustable at 25%, 50%, 75%, or 100%). During reset, the BUSY indicator light will illuminate, and the device will emit beep tones. 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 typically requires module replacement, but this tool enables repair without replacing the control module. For safety, deactivate the Sensotronic Brake Control system using a diagnostic tester before performing brake system maintenance on W211 (E-Class) and R230 (SL-Class) models. System deactivation is required before pad, disc, or fluid replacement due to high pressure (140 bars) in the brake system. Proper tools are essential to prevent personal injury and brake system damage. This lightweight, portable, and easy-to-use tool offers a convenient alternative to STAR-DIAGNOSIS testers for system deactivation. It delivers reliable and safe performance for brake service procedures. 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 variations between the product image and actual item. Measurement tolerance: +/- 1-3 cm.