SL55/63/65/R230 AMG: K&N filters installed, CHECK ENGINE LIGHT ON
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From: Chicago
W215 V12TT Build by Speedriven, W221 S550 4Matic
K&N filters installed, CHECK ENGINE LIGHT ON
Hey guys,
Yesterday night I finished installing my K&N filters, I bought these brand new and simply dropped them in, and re-installed the covers back on. I put about 10 miles on yesterday and today about 5 miles and my check engine light went on after hitting the throttle down a bit harder. The car felt strong and still does, however the check engine light appeared. Anyone know how to reset the computer or had this issue before? I'm not too worried about it since I will be taking the car shortly to Eurocharged for some Headers and heat Exchanger work, so the guys there can check it out. I just want to make sure everything is ok.
Thanks
KAMIL
Yesterday night I finished installing my K&N filters, I bought these brand new and simply dropped them in, and re-installed the covers back on. I put about 10 miles on yesterday and today about 5 miles and my check engine light went on after hitting the throttle down a bit harder. The car felt strong and still does, however the check engine light appeared. Anyone know how to reset the computer or had this issue before? I'm not too worried about it since I will be taking the car shortly to Eurocharged for some Headers and heat Exchanger work, so the guys there can check it out. I just want to make sure everything is ok.
Thanks
KAMIL
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Joined: Oct 2007
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From: SoCal
98 Brilliant Silver E320 Wagon
Assuming you installed the reusable K&Ns, your MAF sensor is probably fouled with oil off the filters. Do an OBD II scan and check to see if codes P0170 and P0173 appear. You can get some CRC MAF cleaner at an auto parts store and clean it. This type of filter (wire mesh) can allow particles large enough to eventually damage the sensor and it will need to be replaced.
Of course, there are many other things which trip the CEL and it could just be a coincidence. Again, a OBD II scan is recommended.
Of course, there are many other things which trip the CEL and it could just be a coincidence. Again, a OBD II scan is recommended.
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Joined: Oct 2006
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From: Lynnwood in summer, Fountain Hills during the rainy season in Wa.
2008 Maserati QP EGT, 2005 SL55AMG , 2002 CLK55AMG 2002 C230K Coupe
The SL55 doesn't have a MAF.
You need the check/clear the code to get the light off.
You need the check/clear the code to get the light off.
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From: Chicago
W215 V12TT Build by Speedriven, W221 S550 4Matic
Do you guys know how you reset the computer??? I know there is a way to do it, so that it resets the memory of throttle response and so on, but I'm not sure where to find it.
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Joined: Oct 2007
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From: Manassas, VA
10 Cayenne GTS, 07 Porsche 911 Turbo
I have K&Ns in my SL and have had no problems. However, when I installed them in my E550 the check engine light activated within five miles. The codes indicated I had bad oxygen sensors that were replaced under warranty. Granted it's a different engine but the outcome is the same. This is the first time I've ever had a "problem" with K&N's in all the cars I've owned.
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From: SoCal
98 Brilliant Silver E320 Wagon
Yes, there is a MAF in the air duct just after the air filter. The place it is on most cars. Since I don't have the car in front of me, I checked EPC.net which shows the MAF on the AMG engine.
You can read the codes and clear the CEL with an inexpensive scanner. Places such as Harbor Freight and auto parts stores have them ($50-90). Connector for scanner should be under dash on drivers side. It may have a plastic cover to flip down.
However, unless you 'fix' the problem the CEL will come back. Also, a bad or disconnected MAF can result in a rich mixture which will cause the catalytic convertors to overheat and melt down.
Good luck.
You can read the codes and clear the CEL with an inexpensive scanner. Places such as Harbor Freight and auto parts stores have them ($50-90). Connector for scanner should be under dash on drivers side. It may have a plastic cover to flip down.
However, unless you 'fix' the problem the CEL will come back. Also, a bad or disconnected MAF can result in a rich mixture which will cause the catalytic convertors to overheat and melt down.
Good luck.
Last edited by RichardM98; Apr 4, 2010 at 12:04 PM.
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Senior Member
Joined: Oct 2006
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From: Lynnwood in summer, Fountain Hills during the rainy season in Wa.
2008 Maserati QP EGT, 2005 SL55AMG , 2002 CLK55AMG 2002 C230K Coupe
Not on the SC AMG engine in the SL55. The SC engine uses a MAP sensor. My NA CLK55 has a MAF sensor so you are correct on some AMG engines have one..Just not the SC engines.
Yes, there is a MAF in the air duct just after the air filter. The place it is on most cars. Since I don't have the car in front of me, I checked EPC.net which shows the MAF on the AMG engine.
You can read the codes and clear the CEL with an inexpensive scanner. Places such as Harbor Freight and auto parts stores have them ($50-90). Connector for scanner should be under dash on drivers side. It may have a plastic cover to flip down.
However, unless you 'fix' the problem the CEL will come back. Also, a bad or disconnected MAF can result in a rich mixture which will cause the catalytic convertors to overheat and melt down.
Good luck.
You can read the codes and clear the CEL with an inexpensive scanner. Places such as Harbor Freight and auto parts stores have them ($50-90). Connector for scanner should be under dash on drivers side. It may have a plastic cover to flip down.
However, unless you 'fix' the problem the CEL will come back. Also, a bad or disconnected MAF can result in a rich mixture which will cause the catalytic convertors to overheat and melt down.
Good luck.
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From: SoCal
98 Brilliant Silver E320 Wagon
My apologies you are correct. Sometimes the illustrations on EPC.net are 'one size fits all'. When I doubled checked with some third party suppliers I was unable to 'buy' a MAF for the model in question.
Senior Member
Joined: Oct 2006
Posts: 375
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From: Lynnwood in summer, Fountain Hills during the rainy season in Wa.
2008 Maserati QP EGT, 2005 SL55AMG , 2002 CLK55AMG 2002 C230K Coupe
Recheck your install. You may have knocked a connector or hose off changing the filters.
I have not reset any CEL with any buttons in the cabin. You can reset the CEL with a scanner but not clear all the codes without a Star tool. It's amazing what codes gets set with one fault.
Most auto parts stores can read the code set and clear the light unless you have a hard fault. A good independant shop should be able to get you back on the road if you don't wish to deal with the MB shop.
I have not reset any CEL with any buttons in the cabin. You can reset the CEL with a scanner but not clear all the codes without a Star tool. It's amazing what codes gets set with one fault.
Most auto parts stores can read the code set and clear the light unless you have a hard fault. A good independant shop should be able to get you back on the road if you don't wish to deal with the MB shop.
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Joined: May 2004
Posts: 755
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From: USA
LS7 powered Corvette
Hey guys,
Yesterday night I finished installing my K&N filters, I bought these brand new and simply dropped them in, and re-installed the covers back on. I put about 10 miles on yesterday and today about 5 miles and my check engine light went on after hitting the throttle down a bit harder. The car felt strong and still does, however the check engine light appeared. Anyone know how to reset the computer or had this issue before? I'm not too worried about it since I will be taking the car shortly to Eurocharged for some Headers and heat Exchanger work, so the guys there can check it out. I just want to make sure everything is ok.
Thanks
KAMIL
Yesterday night I finished installing my K&N filters, I bought these brand new and simply dropped them in, and re-installed the covers back on. I put about 10 miles on yesterday and today about 5 miles and my check engine light went on after hitting the throttle down a bit harder. The car felt strong and still does, however the check engine light appeared. Anyone know how to reset the computer or had this issue before? I'm not too worried about it since I will be taking the car shortly to Eurocharged for some Headers and heat Exchanger work, so the guys there can check it out. I just want to make sure everything is ok.
Thanks
KAMIL
Super Member
Joined: Nov 2001
Posts: 801
Likes: 2
From: South Florida
SL65
That's the ticket! Look for the small hose that could be disconnected below the intake box on the drivers side. US Model.
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From: Arizona
SL55AMG, Ferrari 348, Ferrari Testarossa, Ferrari F40, Ferrari Mondial t, Ducati 916, Indycar
I have been using K&Ns on all my cars, as well as our client's car, and as long as they aren't over oiled, or installed wrong, they work great. I have never had any issues whatsoever.
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From: Norcal
43
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Joined: Apr 2009
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Pinto
55k engine use pressure sensor mount on the distrubitor intake pipe.. measure charged air.. similar to map/Maf...
Newbie
Joined: Jul 2007
Posts: 1
Likes: 0
From: Denmark
SL65-AMG
I think in general to many”out of the blue” answers are posted from people without any clear knowledge off these cars.
If a person has a problem with his car, please post if you really have knowledge or real world experiences on this otherwise don’t.
There is no issue with K&N or Green oiled air filters what so ever, this is just gossip talk from the past.
If a person has a problem with his car, please post if you really have knowledge or real world experiences on this otherwise don’t.
There is no issue with K&N or Green oiled air filters what so ever, this is just gossip talk from the past.
Senior Member
Joined: Aug 2007
Posts: 339
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From: london
ck430 2002
Hey guys,
Yesterday night I finished installing my K&N filters, I bought these brand new and simply dropped them in, and re-installed the covers back on. I put about 10 miles on yesterday and today about 5 miles and my check engine light went on after hitting the throttle down a bit harder. The car felt strong and still does, however the check engine light appeared. Anyone know how to reset the computer or had this issue before? I'm not too worried about it since I will be taking the car shortly to Eurocharged for some Headers and heat Exchanger work, so the guys there can check it out. I just want to make sure everything is ok.
Thanks
KAMIL
Yesterday night I finished installing my K&N filters, I bought these brand new and simply dropped them in, and re-installed the covers back on. I put about 10 miles on yesterday and today about 5 miles and my check engine light went on after hitting the throttle down a bit harder. The car felt strong and still does, however the check engine light appeared. Anyone know how to reset the computer or had this issue before? I'm not too worried about it since I will be taking the car shortly to Eurocharged for some Headers and heat Exchanger work, so the guys there can check it out. I just want to make sure everything is ok.
Thanks
KAMIL
