Loose Gas Cap Warning then Service Engine Light

bmwswag · 09-01-2011, 11:23 PM

I receive a Loose Gas Cap Warning (triangle) then followed by a Service Engine Light. Could these two be related? The Service Engine Light won't go away. Should I just bring it to the dealer to have to looked at? The dealer is 50 miles away so I would like to avoid that trip if it's possible.

roundle · 09-01-2011, 11:28 PM

Yes.

If you get the gas cap warning light 3 times (i.e. you start your car 3 times without fixing the problem), the orange check engine light will turn on and will not shut itself off. Once it's on, you have to go to the dealer for a reset. This happened to me in the Spring (after my wife filled the car).

g_rant · 09-01-2011, 11:42 PM

Quote:

Originally Posted by roundle

Yes.

If you get the gas cap warning light 3 times (i.e. you start your car 3 times without fixing the problem), the orange check engine light will turn on and will not shut itself off. Once it's on, you have to go to the dealer for a reset. This happened to me in the Spring (after my wife filled the car).

Same. But after my mother filled the car and didnt bother to even screw the cap on

Gravy · 09-02-2011, 06:34 AM

mine went away on its own after a week or two

BK · 09-02-2011, 11:56 AM

The SES light will turn itself off. The car runs a fuel system pressure check, which fails when the cap is loose or missing. When it fails, the SES indicator lights. The car requires a certain number of "pass" starts following the failed test before it shuts off the light again. Under normal conditions, this means driving the car about 4 or 5 days before the light turns itself off.

DaveL · 09-02-2011, 10:19 PM

Yes it is related but nothing urgent so when somewhat close to any dealership....Bring it in.

Propagator · 09-02-2011, 11:57 PM

Quote:

Originally Posted by BK

The SES light will turn itself off. The car runs a fuel system pressure check, which fails when the cap is loose or missing. When it fails, the SES indicator lights. The car requires a certain number of "pass" starts following the failed test before it shuts off the light again. Under normal conditions, this means driving the car about 4 or 5 days before the light turns itself off.

I concur. This just happened to me last week, and it eventually turned itself off. Not before I called the dealer though, and I was told that while it is somewhat model dependent, in most cases the SES light will go off after 17 to 18 normal starts.

Yoko22R · 09-03-2011, 12:36 AM

I have the same thing going on. 2A15. DMTL small leak. I keep clearing and it keeps coming back. My gas cap is on good. Looks like I have a leak somewhere.

09-01-2011, 11:23 PM	#1
bmwswag New Member 9 Rep 22 Posts Drives: BMW 328i xDrive Join Date: Aug 2011 Location: Brooklyn, NY iTrader: (0)	Loose Gas Cap Warning then Service Engine Light I receive a Loose Gas Cap Warning (triangle) then followed by a Service Engine Light. Could these two be related? The Service Engine Light won't go away. Should I just bring it to the dealer to have to looked at? The dealer is 50 miles away so I would like to avoid that trip if it's possible.
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09-01-2011, 11:28 PM	#2
roundle EXPAT 65 Rep 889 Posts Drives: 18 VW GTI;18 CX9;11 E91 N52 Join Date: Apr 2010 Location: USA iTrader: (0)	Yes. If you get the gas cap warning light 3 times (i.e. you start your car 3 times without fixing the problem), the orange check engine light will turn on and will not shut itself off. Once it's on, you have to go to the dealer for a reset. This happened to me in the Spring (after my wife filled the car).
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09-02-2011, 06:34 AM	#4
Gravy Look away, look away, look awa.... 5 Rep 158 Posts Drives: 2007 335i sedan m/t bone stock Join Date: May 2011 Location: Alabama iTrader: (0)	mine went away on its own after a week or two __________________ I aint got time for all that "proper" grammar nonsense. ROLL TIDE!
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09-02-2011, 11:56 AM	#5
BK Smiling politely 165 Rep 7,931 Posts Drives: 330i Join Date: Feb 2006 Location: Washington DC iTrader: (0) Garage List 2006 330i [9.00]	The SES light will turn itself off. The car runs a fuel system pressure check, which fails when the cap is loose or missing. When it fails, the SES indicator lights. The car requires a certain number of "pass" starts following the failed test before it shuts off the light again. Under normal conditions, this means driving the car about 4 or 5 days before the light turns itself off. __________________ E90 330i Black Sapphire 6MT \| 991.1 C4 Platinum Silver 7MT
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09-02-2011, 10:19 PM	#6
DaveL Banned 14 Rep 970 Posts Drives: 2010 335 coupe msport Join Date: May 2010 Location: Darien CT. iTrader: (0)	Yes it is related but nothing urgent so when somewhat close to any dealership....Bring it in.
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09-03-2011, 12:36 AM	#8
Yoko22R Second Lieutenant 184 Rep 258 Posts Drives: E90 M3 Join Date: Jun 2011 Location: Irvine, CA iTrader: (2) Garage List 2008 BMW M3 [0.00]	I have the same thing going on. 2A15. DMTL small leak. I keep clearing and it keeps coming back. My gas cap is on good. Looks like I have a leak somewhere.
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