Two problems related to other fuel system pump have been reported for the 2006 Mercedes Benz R350. The most recently reported issues are listed below.
Wiring from engine harness to fuel pump burnt on freeway , engine stalled and shut down, could not start back up in middle of i5 freeway. Repairs are amounting to $4000. Could have burnt entire vehicle and after reading numerous complaints with exact same problem something needs to be done.
After a normal day of driving the vehicle, I stopped for a small amout of time switched the car off. When I returned the car would not start, after 30 minutes of this I had it towed to a dealer. After several days he informed me that he checked the fuel pump and ignition system. Everything checked ok. He reinstalled the parts and the car started fine for three days. I picked up the car only to have it stall again in a matter of hours, with the same problems.