Remove the fuel tank unit.
Remove the reservoir (A).

Remove the clip (B) and the ground wire (C), then remove the bracket (D).
Remove the clip (E), then remove the fuel pressure regulator (F).
Install the parts in the reverse order of removal with new O-rings (G) and a new bracket. When installing the fuel tank unit, align the marks on the unit and the fuel tank.
NOTE:
Coat the O-rings with clean engine oil; do not use any other oils or fluids.
Do not pinch the O-rings during installation.
Use all the new parts supplied in the pressure regulator replacement kit.
Mercedes-Benz C-Class Coupe review
The Mercedes C-Class Coupe encapsulates all the excellence of the sedan, packaged in an attractive exterior. Discover why it stands out as one of the most desirable mid-size coupes with our expert r ...
Preparing to Drive
You should do the following checks and adjustments before you drive your vehicle.
1. Make sure all windows, mirrors, and outside lights are clean and unobstructed.
Remove frost, snow, or ice.
2. C ...
Break-in Period
Help assure your vehicle’s future reliability and performance by paying extra
attention to how you drive during the first 600 miles (1,000 km).
During this period:
• Avoid full-throttle starts ...