The check engine light may turn on in 2005-2015 Mercedes-Benz vehicles equipped with V6 M272 and V8 M273 engines due to the swirl flap system's failure.
We see quite frequently that the tumble flap gets stuck activated position triggering fault codes such as P2004, P2005, and P2006.
Symptoms
- Borken Swirl Flap Arms
- Check engine light on
- Rough idle
- Reduced power
- Decrease in MPG
- Limp Mode
Fault Codes
Fault codes related to this problem:
- P2004 - Intake Manifold Runner Control Stuck Open Bank 1
- P2005 - Intake Manifold Runner Control Stuck Open Bank 2
- P2006 - Intake Manifold Runner Control Stuck Closed Bank 1
- P2187 - System Too Lean at Idle DTC
- P2189 - System too lean at idle, bank 2
Solution
Mercedes-Benz dealership's recommended solution may be to replace the entire intake manifold, which does fix the problem but can be very expensive.
Instead of replacing the intake manifold, we recommend replacing the broken lever. You can purchase an M272 Air Flap Runner Repair Kit and have your auto mechanic replace the broken pieces.
Affected Vehciles
Here is a list of vehicles that are likely to get affected by this issue:
- 2015 - 2009 G550
- 2013 - 2006 R350
- 2013 - 2010 S400
- 2012 - 2010 C250
- 2012 - 2008 C300
- 2012 - 2006 C350
- 2012 - 2007 GL450
- 2012 - 2008 GL550
- 2012 - 2009 GLK350
- 2012 - 2007 SL550
- 2012 - 2005 SLK350
- 2007 - 2011 CLS550
- 2011- 2006 E350
- 2011- 2007 E550
- 2011- 2006 ML350
- 2011- 2010 ML450
- 2011- 2008 ML550
- 2011 - 2008 S450
- 2011 - 2007
- 2011 - 2009 SLK300
- 2010 - 2007 CL550
- 2009 - 2006 C230
- 2009 - 2006 CLK350
- 2009 - 2007 CLK550
- 2009 - 2007 E280
- 2009 - 2008 E300
- 2008 - 2006 SLK280
- 2007 - 2006 C280
In theory, any Mercedes-Benz equipped with the V6 M272 or V8 M273 engine could be affected by this issue. This problem affects the early 2005-2010 models as Mercedes-Benz improved these parts for the newer models.
Part numbers
- A2721402401
- 2721402101,
- 2721402201,
- 2721402401.
