Yesterday a warning light lit on my Z3 - "exhaust emission values have deteriorated" it says in the handbook. 2 days before I changed the plugs to Denso Iridium IK20 and the car is running better than ever before, no noticeable misfire. Can I still drive the car with the waring light lit? Can you suggest any reasons for it being lit, and does it need to be reset via the OBD11 (ie by a dealer)?
Thanks
This may be your egr valve, does it want to stall when its ticking over.
I posted a couple a months ago that I was having the 'exhaust emmissions' light coming on my BMW 520i a couple of months ago......... I found a local BMW specialist who initially could not find the fault. While carrying out an inspection 2 last week he found that I had a tear in the air intake pipe. He strongly believes this would cause the light to come on.
I have had it replaced today so will know in due cause whether this is resolved. So far so good..
Forgot to mention that he had to replace the same part on a Z3 a couple of weeks ago..
See my comments below dated the 15th October........ Since I have replaced my air intake pipe I have not had the warning light back on :-) It only cost me £70 to get replaced by a BMW specialist using genuine parts!
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Hi
same problem with my 318ci coupe,few months ago the light showed up for few hours then went off. now few days ago came back on again,stayed for 2 days and now off again. just got the car read on the machine and there are2 faults, it may be the exhuast,so they got to check the exhaust system or it may be the 02orh2 cenre, cant remember what it is called. waiting for quote
Hi Had same sign coming on from my 320i, called 24hr call service on bank holiday weekend and the eng came did the check and found that the ignition coil was faulty and fixed it immediately!! that was brilliant. Hope the prob is fixed..
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I have the very same problem, the Exhaust emission warning light came on a few days ago, it’s a BMW 5 series and it’s not due a service for a while yet.
Anyone know what causes this and what the remedy is?
The car drives fine with the warning light on I will be bringing the car to a garage soon but would like to know what to expect.
My Z3 is doing the same thing, however as i have a rattle under the car, which sounds as though it has something to do with the exhaust. I take it that this has caused my exhaust emmissions light to come on. t he car also seems to be loosing power, especially when i first start it up, it dosen't want to pick up when you put your foot down.
Dave
I am having the same problem on my 5 series. The warning light came on about a month ago and stayed on for about 2 days - I spoke to a mechanic who told me not to worry about it. The light has come on again today. Does anyone know what it could be??
loosing power when accelerating sound like it is not getting any gas
See my comments about the air intake pipe
Emission warning light will not clear but car runs fine
Exhaust emission values light is on car has done53000 miles have I got a problem?.. Thanks
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