An OBD2 16PIN connector tool designed to plug into the vehicle's OBD-II communication port. Turn the ignition switch to ON; the device light will illuminate and emit two beeps, indicating proper operation. This tool allows users to reset the maintenance mode switch with selectable levels (25%, 50%, 75%, 100%). During reset, the BUSY indicator light will activate and the device will beep; data recovery completes within 10 seconds while the BUSY indicator remains active. Compatible with W211 and R230 models equipped with ABS systems. Addresses repair code C249F: "Operation time of component A7/3 exceeded (Hydraulic Unit)." This diagnostic tip indicates an internal control unit fault. Instead of replacing the control module, this tool enables a repair without requiring a new module. For safety, it is recommended to deactivate the Sensotronic Brake Control system before performing brake maintenance on W211 (E-Class) and R230 (SL-Class) models. Deactivation is required prior to changing brake pads, discs, or fluid due to high system pressure (up to 140 bars). Proper tools are essential to prevent personal injury or damage to the brake system. This affordable, lightweight, and easy-to-use device serves as a practical alternative to the STAR-DIAGNOSIS tester for deactivating the brake system. It performs 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 Note: The package includes only the items listed above. Other products are not included. Note: Lighting effects and display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.