Reset Engine Light- regular fuel
 

Regular fuel has turned on my Engine light...how do I turn it off?

:D Not trying to be a wise acre but try burning premium! :rofl:

no shit...an employee filled it up for me. I have run 2 refills of premium since and it wont reset.

on my old e 53 it would reset by itself. one time I didn't get the gas cap sealed tight and the light came on. I checked the cap and tightened it and it went out after awhile. maybe the 70's have to be reset manually.

It takes a while, since the sensors have to measure at least 5 times (i dunno when) to clear the codes. Give it a week.

What ties the engine light to the regular fuel? There is no octane sensor in the engine management system.

It could be bad fuel (much lower than 87, water, etc), or a loose gas cap, but simply using regular has no direct linkage with the engine light coming on.

I think it is more likely that the person who filled it up did so with the engine running - which triggered the check engine light. As others have said, if it doesn't reset after another tank, you probably need to bring it in.

I'm with JCL and wch above...the reg gas itself, did not set off the CEL.
GL,mD

Perhaps it's not wise to let an employee fill up your gas tank, unless you really trust him/her. You never know what could go in the tank other than gas.

It was probably the knock sensors that threw a code. If the engine senses knocks, the DME retards timing until the knocks cease. But in this case, if running regular gas, the DME probably retarded timing enough to throw a code.

You'll probably have to go to the dealer to reset the code, as this is something that doesn't reset itself, unlike the gas cap.

Just go to your local autozone or equivalent and have them read the code or you could buy a peake reader

The latest scan tools don't all work on '06 - later cars.

If the code is there, you need to go to autozone, etc and have it reset. It's very simple.

You have 4 years free maintenance - I would go to the dealer rather than going to Autozone. You can also get anything else fixed while you are there.

OBD systems are universal per the law, so a $30 scanner is going to do the same thing (and as easily) as a $10,000 BMW tool as far as reading and clearing the code goes. Difference is that you'll need an appointment with the dealer. It's your car and hence your call. Good luck.

According to the manual, thats exactly what happened...just no info on how to reset it. Its no big deal, it can wait for the delaer to reset, just thought I was missing somthing.
BTW- The employee thought he was doing me a favor, no real harm done...he didnt realize premium was required. Its the first tank of Regular fuel in 22k miles.

Look at the bright side - they could have put in diesel ;)

It will be interesting to see what the dealer says. I still don't understand what your check engine light has to do with using a fuel that meets the minimum AKI (which is 87, regular, according to the US/CA 2007 E70 owner's manual). It could have been bad quality fuel, sure, but that could happen whether it was regular or premium.

Does your manual say something about using regular fuel being a cause of the Check Engine light coming on?

The CEL is on but I have no warnings in the check systems area...actually it says all systems ok when I run the check and there are no system errors...just a light on. I just put my 3rd full tank of Premium since this happened and no reset.

Once the cel is on, I don't think it's going to reset itself. In most vehicles, it has to be manualy reset.

CEL Reset
 

I have a 2001 X5 ...with the new 10% "additives" ethanol etc my CEL comes on...I bought the reader/reset at discount auto parts....plugged in, found my "bank 1" too lean ....reset it, with no issue. the unit cost $49.00 cheaper than the gas to go to the Dealer and aggravation etc.

Good luck!

The engine icon in our dash illuminated yesterday as well. I checked the Information available via iDrive and all systems report "Ok". In addition there are no Check Control Messages. What an irritation.