30 Introduction Changing the engine power output R modifications as well as installations and alterations ! Increased power could: R change emission levels R work on electronic components Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre. R cause malfunctions R lead to consequential damage The operating safety of the engine cannot be guaranteed in all situations. ! Only have work carried out on the engine electronics and its associated parts, such as control units, sensors, actuating com- ponents and connector leads, at a qualified specialist workshop. Vehicle components may otherwise wear more quickly and the vehicle's operating permit may be invalida- ted.
Any tampering with the engine management system in order to increase the engine power output will lead to the loss of warranty enti- tlements. If the vehicle's engine power output is increased: R tyres, suspension, braking and engine cool- ing systems must be adapted to the increased engine power output. Registering your vehicle Mercedes-Benz may ask its Service Centres to carry out technical inspections on certain vehicles. This is always the case if the quality or safety of the vehicle is improved as a result of the inspection. Mercedes-Benz can only inform you about vehicle checks if it has your registration data. Your registration data is not stored if: R have the vehicle recertified.
R report changes in power output to the vehi- cle insurers. This will otherwise lead to the invalidation of the vehicle’s general operating permit and its insurance cover. If you sell the vehicle, inform the buyer of any alterations to the vehicle's engine power out- put. If you do not inform the buyer, this may constitute a punishable offence under national legislation. R you did not purchase your vehicle at an authorised specialist dealer. R your vehicle has not been inspected at a Mercedes-Benz Service Centre. It is advisable to register your vehicle with a Mercedes-Benz Service Centre. Inform Mercedes-Benz as soon as possible about any change of address or vehicle ownership.
Qualified specialist workshops A qualified specialist workshop has the nec- essary specialist knowledge, tools and quali- fications to correctly carry out the work required on the vehicle. This is especially the case for work relevant to safety. Observe the notes in the Maintenance or Service Booklet. The following work should always be carried out at a qualified specialist workshop: The BlueTec ® exhaust gas aftertreatment system must be operated in conjunction with the reducing agent AdBlue ® if it is to function correctly. You will find information about AdBlue ® in the "Service products" section ( Y page 365).
Topping up and operating the vehicle with AdBlue are necessary in order to comply with emissions laws and regulations, and are BlueTec ® exhaust gas aftertreatment R work relevant to safety R service and maintenance work R repair work