An OBD tool with a 16PIN connector designed to plug 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 (with settings at 25%, 50%, 75%, or 100%). During this process, the BUSY indicator light will flash, and the device will emit beeping tones. 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 exceeding the operation time of component A7/3 (hydraulic unit). This diagnostic tip indicates an internal control unit fault. The tool allows for repair without replacing the control module.For safety, prior to performing brake system maintenance on W211 (E-Class) and R230 (SL-Class) models, the Sensotronic Brake Control system must be deactivated using a compatible diagnostic tester. System deactivation is required before any brake service, such as pad, disc, or fluid replacement, due to high pressure (up to 140 bars) in the system. Proper tools are essential to prevent personal injury and damage to the brake system.This lightweight, safe, and easy-to-use tool provides a convenient alternative for deactivating the system, enabling efficient and safe brake maintenance.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 variation between the image and the actual item. Measurement error allowance is +/- 1-3 cm.