Does anyone know how to reset either the check engine light or the service light on a volvo S40?

I'm trying to find out the same thing! Let me know if you figure it out. Thanks!

Does anyone know how to reset either the check engine light or the service light on a volvo S40?

Allmodels for 1999 and on can be reset by; Putting the ignition key into position I, push in and hold the odometer reset button (use your left hand), move the ignition key to position II, when the service light begins to blink,let go of the odometer reset button. Confirm by turning your Volvo off then on again.

how can I reset the check engine light on my 2001 volvo s40 and the service light as well?

Service light:

S/V40/70 older-1999 = Need to use the OBDII testern.
S/V40/70 1999-newer = Putting the ignition key into position I, push in and hold the odometer reset button (use your left hand), move the ignition key to position II, when the service light begins to blink,let go of the odometer reset button. Confirm by turning your Volvo off then on again.



Engine light:

Something is wrong with the engine, are you really sure you just want to ignore it?
You can try just to remove the cables from the battery over the night. Will it
Light up again, well, and then you have two options, live with it until it and
Take a chance and drive until it brakes down. Or let a shop run a test.

I have tried to search on our large Swedish forums for an answer but them all
Recommend going to a shop and running the test system and check what’s wrong.
Could be lots of things, and in the end will you save money by correcting it instead
of driving none economically. Could be the oil, could be the air mass counter, could be
Lots of different things, most have mentioned that it was relative easy things when they
let them run a test.