NO
i too bought a code reader because of my Mercedes,
There is a bunch written here about the Crank shaft Poistion sensor. CPS.
At about 70,000 miles most of us 1st experience the ML stalling at an intersection and it will start back up. soon it will take minutes to restart.

Its a breeze to replace an about $75. I had to buy a torx socket to replace it.

__________________
Steve Danville
what i did myself.
CPS
rear shocks
MAS x 3.
SparkPlugs (twice)
Fuel pump & Filter
Window switch
replaced both failed horns with Honda horns.
Cleaned ERG Tube
Oil changes
Oil consumption Fix
Brake Pads
A/C Recharge
Anti-Freeze change X 2.
Front Shocks. Monroe. $90
Mercedes Warrenty Work:
Harmonic balancer,power steering clamp. Cat converters.Drive Shaft Bearing.s
Replaced Outer Lower Tie Rods and front lower ball joints at 156,000 miles