An OBD tool with a 16PIN connector designed to interface with the vehicle's OBD-II communication port. Turn the ignition switch to ON position; the OBD tool light will illuminate, and the device will emit two beeps indicating proper operation. This tool supports maintenance mode reset functions with adjustable 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 remains 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 replacing the entire 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. System deactivation is critical prior to servicing brake components such as pads, discs, or fluid due to high pressure (up to 140 bars) in the system. Proper tools are essential to prevent personal injury or damage to the brake system.This lightweight, safe, and easy-to-use device offers a practical alternative to the STAR-DIAGNOSIS tester for compatible vehicles, 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: The package includes only the items listed above. Other products are not included. Light reflection and display differences may cause slight color variations between the product image and actual item. Measurement error allowance is +/- 1-3 cm.