An OBD tool with a 16PIN connector that plugs 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 (25% - 50% - 75% - 100% adjustable), during which 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: "Operation time of component A7/3 exceeded (Hydraulic Unit)." This code indicates an internal control unit fault. This tool allows repair without replacing the control module.For safety, before performing brake system maintenance on W211 (E-Class) and R230 (SL-Class) models, the Sensotronic Brake Control system must be deactivated using a diagnostic tester. System deactivation is required before brake pad, disc, or fluid replacement due to high pressure (140 bars) in the system. Proper tools are essential to prevent injury and damage.This affordable, lightweight, safe, and easy-to-use tool serves as an alternative to the STAR-DIAGNOSIS tester for deactivating the 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: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.