Turbo hose collapse
11-07-2012, 12:14 PM
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S205 C250 Sport prem+ Airmatic / E220 CDI Coupe / Lexus RX400h
Turbo hose collapse
A word of warning to anyone with a 2011/12 Diesel E-Class.
I was driving on the motorway last week cruising @ 80mph when I lost all engine power. Cruise was still set at 80mph but I lost all revs and rolled to a stop on the hard-shoulder.
I switched the ignition off, left the engine off for 5 minutes, switched back on and all was okay and I arrived safely at destination, I called Mobilo who said as the car was drivable there wasn't a problem and not to worry about it!
My MB dealer has diagnosed the problem as a collapsing turbo hose. Basically the OEM hose has a weak spot and when air is sucked through, the hose collapses. The engine keeps on sucking, creates a vaccum and as it can't get any air in, it looses all pressure and goes into limp-home mode. My car had only done 20,000 miles.
Turning the ignition off resets the limp-home setting. It also allows the hose to re-inflate.
Apparantly it's a known problem on diesel E-Classes built in 2011/12 and my dealer has replaced quite a few. The new hose is strengthened so it shouldn't happen again.
I was driving on the motorway last week cruising @ 80mph when I lost all engine power. Cruise was still set at 80mph but I lost all revs and rolled to a stop on the hard-shoulder.
I switched the ignition off, left the engine off for 5 minutes, switched back on and all was okay and I arrived safely at destination, I called Mobilo who said as the car was drivable there wasn't a problem and not to worry about it!
My MB dealer has diagnosed the problem as a collapsing turbo hose. Basically the OEM hose has a weak spot and when air is sucked through, the hose collapses. The engine keeps on sucking, creates a vaccum and as it can't get any air in, it looses all pressure and goes into limp-home mode. My car had only done 20,000 miles.
Turning the ignition off resets the limp-home setting. It also allows the hose to re-inflate.
Apparantly it's a known problem on diesel E-Classes built in 2011/12 and my dealer has replaced quite a few. The new hose is strengthened so it shouldn't happen again.
