Date registered: Dec 2005
Vehicle: W211 E320 Bluetec R129 SL500 - $1300 car ........ Ford F350 6l
Location: CA Bay Area
Mentioned: 9 Post(s)
Quoted: 1123 Post(s)
Sounds complicated. Why chock the wheels? The level suppose to be checked on hot transmission. 5 miles might not be good enough, when that barely warms up the engine.
Switching the gears is necessary only if you do the test after engine shut down. At least that was procedure last time I read about it in manual, what was some time ago. Supposable MB have electronic sensor that will warn you about low fluid level, but I couldn't confirm that.