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 tool supports resetting the maintenance mode switch (options available at 25%, 50%, 75%, and 100%). During reset, the BUSY indicator light will flash and the device will beep; 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 fault typically indicates an internal control unit issue. The tool allows for system reset and repair without requiring replacement of the control 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 necessary prior to pad, disc, or fluid replacement due to high pressure (up to 140 bars) in the system. Proper tools are essential to prevent injury and damage. This compact, lightweight, and user-friendly tool offers a convenient alternative to STAR-DIAGNOSIS testers for deactivating the brake control system, enabling safe and efficient brake service. 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 image and the actual item. Measurement error allowance is +/- 1-3 cm.