"Service Engine Soon" warning light -- what could it be?

skim7x · 10-07-2008, 12:58 PM

Hey guys,

Yesterday, out of nowhere, my "Service Engine Soon" light came up on my dash. I have a 335i coupe with the Dinan Flash Stage II.

Anyone know what the 3-4 most common causes of a "Service Engine Soon" light to be triggered? Anyone with this experience?

I have an appointment scheduled for Thursday, but just wanted to get some feedback before I go in... just in case I shouldn't be driving with the warning light on.

Thanks!

F32Fleet · 10-07-2008, 02:53 PM

BMWNA detected a mod on your car var the key fob and is requesting you come in so they can take a picture of you and the car for their "Mod of Shame"

skim7x · 10-07-2008, 02:59 PM

^ur hilarious

...

Richwm · 10-07-2008, 03:11 PM

Maybe a loose Gas cap.

skim7x · 10-07-2008, 03:14 PM

Quote:

Originally Posted by Richwm

Maybe a loose Gas cap.

Yeah, the SA asked me about that... but I haven't filled up since last week and the warning just came on yesterday.

I'll be sure to check when I get back to the car later today...

Thanks

535desire · 10-07-2008, 03:17 PM

doesn't "Service Engine Soon" just indicate that you are due for regular scheduled maintenance? Or is it a check engine light/MIL? If it is the latter, then you would need to scan for codes to determine whey the indicator came on.

ENINTY · 10-08-2008, 12:40 PM

Quote:

Originally Posted by Richwm

Maybe a loose Gas cap.

It's not the gas cap. There is a icon that comes up if the gas cap is loose. It looks like a giant light bulb above the right fender. The SEL is probaly a misfire or something. Have the dealer check it. Dinan shouldn't void the warranty.

skim7x · 10-08-2008, 12:45 PM

So, after reading Richwm's reply and listening to my SA, I checked my gas cap yesterday evening, and it was locked in place... but I took it off and secured it back in place again just in case.

This morning, the SEL went away... whether this was because it was a misfire (as ENINTY said) or if my gascap was somehow loose or the gascap sensor failed to detect the gascap for some reason, I don't know...

well, it's fixed for now...

Thanks for the input, guys!

ENINTY · 10-10-2008, 05:30 AM

There are a lot of codes that will reset after a few dirve cycles. I misfire will reset. If the gas cap was loose you'd get the icon is spoke about. Last summer a mouse chew a hole in one of the vapor canister lines, which triggered the gas cap icon on my car . The '06 manual does not show what the icon looks like; it only mentions it.

GrandMaster_B · 07-18-2009, 11:04 PM

I'd take it in anyway. The first time me SES light came on and went off by itself, I thought nothing of it. Turned out to be some serious misfiring. Better off getting it checked out. It should save any codes it threw.

ron1 · 07-19-2009, 12:05 PM

i have the same problem came up i have no mods done (e92 335i coupe) . mine is worse my whole engine ratles and shakes and when i try to give a gas power comes after some delay and fellowed by thick smoke from car pipes can't drive it have to tow it to dealer i will know by tommrow whats worng hopefully . but you guyz have any idea what it should be.

jmd_forest · 07-19-2009, 12:32 PM

Mine came on due to exceeding the coolant input temp threshold (92 degrees I believe), but not classic overheating. Can't quite figure out why its running too warm. May be just the sensor, may be the fan is not coming on soon enough. Thermo is new.

jmd_forest

javier33 · 10-06-2009, 10:52 AM

did anyone ever find out the issue when the SES light is on and there is misfiring occurring? I have a 2006 325i that had slight mis firing yesterday and this morning. I filled up the tank with 93 octane and immediately it got worse. I jumped on the highway and the SES light came on along with serious misfiring/vibration under acceleration only. Car has 48k miles and has been serviced regularly. I stopped at the parts store and put 2 bottles of drygas and a bottle of Techron FI cleaner, but to no avail. I also removed the gas gap and put it back making sure it is secure. any ideas would be greatly appreciated.

thefox456 · 05-25-2010, 09:30 AM

I had the same thing with my e92 335i and the solution is check your 6 sparks and you probably need to change them, that will fix the problem and nore engine service soon light believe me.

chencho760 · 06-28-2017, 10:58 AM

Quote:

Originally Posted by thefox456

I had the same thing with my e92 335i and the solution is check your 6 sparks and you probably need to change them, that will fix the problem and nore engine service soon light believe me.

I have an 07 328i e92 original spark plugs and ignition coils. Check engine soon light came on and when I come to a stop/light signal- i step on the clutch and the car shuts off. Could the stalling be from the plugs? Please help.

10-07-2008, 12:58 PM	#1
skim7x Colonel 213 Rep 2,558 Posts Drives: 335i, C63 AMG Join Date: Sep 2006 Location: USA iTrader: (4) Garage List 2007 335i [10.00]	"Service Engine Soon" warning light -- what could it be? Hey guys, Yesterday, out of nowhere, my "Service Engine Soon" light came up on my dash. I have a 335i coupe with the Dinan Flash Stage II. Anyone know what the 3-4 most common causes of a "Service Engine Soon" light to be triggered? Anyone with this experience? I have an appointment scheduled for Thursday, but just wanted to get some feedback before I go in... just in case I shouldn't be driving with the warning light on. Thanks! __________________ '07 Space Gray 335i coupe - R.I.P. COBB ProTuned \| AMS \| CP-e \| BMS \| Quaife
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10-07-2008, 02:53 PM	#2
F32Fleet Lieutenant General 3905 Rep 10,601 Posts Drives: 2015 435i Join Date: May 2005 Location: Southeastern US iTrader: (0)	BMWNA detected a mod on your car var the key fob and is requesting you come in so they can take a picture of you and the car for their "Mod of Shame"
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10-07-2008, 02:59 PM	#3
skim7x Colonel 213 Rep 2,558 Posts Drives: 335i, C63 AMG Join Date: Sep 2006 Location: USA iTrader: (4) Garage List 2007 335i [10.00]	^ur hilarious ... __________________ '07 Space Gray 335i coupe - R.I.P. COBB ProTuned \| AMS \| CP-e \| BMS \| Quaife
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10-07-2008, 03:11 PM	#4
Richwm Captain 65 Rep 920 Posts Drives: 06 E90 330i 6MT, 01 E46 330i Join Date: May 2006 Location: Canyon Country, CA. iTrader: (0) Garage List 2020 Jeep JLU Wrangler [0.00] 2006 (Mar 05 build ... [8.00] 2001 330i [9.00]	Maybe a loose Gas cap. __________________ Mar 05 Build date,2006 E90 330i, Sport Package, Premium Package, TR MT-1's . V-1 Hard-wired power with custom V-1 Concealment Display . Rear fogs, Rear power outlet's, M short shifter knob, BlackLines, BMW Strut tower bar, CDV Delete, Front M3 wishbones + tension struts, BMW Performance shocks and springs, BMW Performance Brake kit F&R, OEM short shift kit. Rear M3 Guide rods and Wishbones. 2006 E-90 330i with 302,000 miles.
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10-07-2008, 03:17 PM	#6
535desire Private First Class 5 Rep 162 Posts Drives: MB & VW diesels Join Date: Dec 2007 Location: San Antonio, TX iTrader: (0)	doesn't "Service Engine Soon" just indicate that you are due for regular scheduled maintenance? Or is it a check engine light/MIL? If it is the latter, then you would need to scan for codes to determine whey the indicator came on.
	Appreciate 0 Quote

10-08-2008, 12:45 PM	#8
skim7x Colonel 213 Rep 2,558 Posts Drives: 335i, C63 AMG Join Date: Sep 2006 Location: USA iTrader: (4) Garage List 2007 335i [10.00]	So, after reading Richwm's reply and listening to my SA, I checked my gas cap yesterday evening, and it was locked in place... but I took it off and secured it back in place again just in case. This morning, the SEL went away... whether this was because it was a misfire (as ENINTY said) or if my gascap was somehow loose or the gascap sensor failed to detect the gascap for some reason, I don't know... well, it's fixed for now... Thanks for the input, guys! __________________ '07 Space Gray 335i coupe - R.I.P. COBB ProTuned \| AMS \| CP-e \| BMS \| Quaife
	Appreciate 0 Quote

10-10-2008, 05:30 AM	#9
ENINTY Banned 178 Rep 3,415 Posts Drives: 2006 325i Sport Join Date: Jun 2006 Location: Virginia iTrader: (0)	There are a lot of codes that will reset after a few dirve cycles. I misfire will reset. If the gas cap was loose you'd get the icon is spoke about. Last summer a mouse chew a hole in one of the vapor canister lines, which triggered the gas cap icon on my car . The '06 manual does not show what the icon looks like; it only mentions it.
	Appreciate 0 Quote

07-18-2009, 11:04 PM	#10
GrandMaster_B - 0 Rep 58 Posts Drives: '10 E90 335i Join Date: Oct 2008 Location: Philly iTrader: (0)	I'd take it in anyway. The first time me SES light came on and went off by itself, I thought nothing of it. Turned out to be some serious misfiring. Better off getting it checked out. It should save any codes it threw. __________________ '10 E90 335i / Le Mans / Saddle / Aluminum / 6MT / M Sport / Premium / Navigation / Logic7 / Heated Seats
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07-19-2009, 12:05 PM	#11
ron1 Registered 0 Rep 1 Posts Drives: 335i coupe Join Date: Jul 2009 Location: maryland iTrader: (0)	i have the same problem came up i have no mods done (e92 335i coupe) . mine is worse my whole engine ratles and shakes and when i try to give a gas power comes after some delay and fellowed by thick smoke from car pipes can't drive it have to tow it to dealer i will know by tommrow whats worng hopefully . but you guyz have any idea what it should be.
	Appreciate 0 Quote

07-19-2009, 12:32 PM	#12
jmd_forest Enlisted Member 5 Rep 45 Posts Drives: 2008 328xi Join Date: Jun 2009 Location: South NJ iTrader: (0)	Service engine soon? Mine came on due to exceeding the coolant input temp threshold (92 degrees I believe), but not classic overheating. Can't quite figure out why its running too warm. May be just the sensor, may be the fan is not coming on soon enough. Thermo is new. jmd_forest
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10-06-2009, 10:52 AM	#13
javier33 Registered 0 Rep 1 Posts Drives: 06 E90 Sedan 325i Join Date: Oct 2009 Location: Maryland iTrader: (0)	e90 sedan hesitating under accelertionw/ SES light did anyone ever find out the issue when the SES light is on and there is misfiring occurring? I have a 2006 325i that had slight mis firing yesterday and this morning. I filled up the tank with 93 octane and immediately it got worse. I jumped on the highway and the SES light came on along with serious misfiring/vibration under acceleration only. Car has 48k miles and has been serviced regularly. I stopped at the parts store and put 2 bottles of drygas and a bottle of Techron FI cleaner, but to no avail. I also removed the gas gap and put it back making sure it is secure. any ideas would be greatly appreciated.
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05-25-2010, 09:30 AM	#14
thefox456 New Member 0 Rep 16 Posts Drives: M3 E93 Join Date: Feb 2008 Location: CASABLANCA iTrader: (0)	I had the same thing with my e92 335i and the solution is check your 6 sparks and you probably need to change them, that will fix the problem and nore engine service soon light believe me.
	Appreciate 0 Quote