Service Information: Engine output increase

 With the spread of supercharged gasoline and diesel engines with electronic control units, the accessory industry has increased its efforts to further increase the power and torque of the engines by means of chip tuning.
This has resulted in increasing damage profiles when analyzing guarantee claims. We would therefore point out at this point that nothing has changed in the rejecting posture of our company towards such modifications. The layout of the individual components in the engine management and drive train have been matched to one another for maximum comfort and durability and are specified in the model approval process. Any subsequent modifications to the vehicle of this type or use of parts from other companies which have not been tested and approved reduce the safety reserves provided by the manufacturer.

 This leads to invalidation of the operating permit for the affected vehicle. The warranty and guarantee obligation on the part of Daimler AG may be discontinued if the arising fault/damage occurs in causal connection with the performance tuning measures which are carried out subsequently.
Moreover, performance tuning constitutes product misuse, which may lead to the manufacturer's product liability being discontinued.