I’ve changed the sensor and pushed the reset on the counter but my light is still on .Does anyone have any idea what I can do to resolve this issue ? Thank you in advance !
Did you hear/feel a definite click when you pressed the reset?
cant say that I did. Is it supposed to?
Try again. Push harder/further. I recall a distinct click. But……it’s been many years!
I’ll give that a shot thanks
I agree with Doug. The O2 sensor light came on in my former 1984 XJ6 Vanden Plas 20 years ago or so. When I pushed down on that switch I heard a definite pronounced click and then the light turned off. You will know for sure when you have properly reset that O2 sensor light switch for that click.
BTW, that switch goes on after a predetermined number of miles driven since that switch was last reset and has nothing to do with the actual condition of your O2 sensors which might be entirely fine.
I pushed it in with a key and definitely no click when pushed all the way I wonder if the counter is bad , car sat for about 30 years
Can you get some sort of penetrating oil in there, somehow? I’m thinking the mechanism might be stuck.
Might have to remove the unit from the car to do so?
Just thinking out loud here
removed the counter blew compressed air to get any debris and sprayed a little deoxit in the hole . Still nothing . I am just going to unplug it so the light goes off if its just a counter anyway Thanks again
Figure 18.1 of the Series III XJ6 S57 Electrical Guide shows that there are four wires connected to the Service Interval Counter. The Green wire going to pin 15 is 12 VDC power from fuse #4 in the Main Fuse Panel. The Black wire going to pin #31 is the ground wire. The yellow wire going to pin #6 provides the signal from the speedometer pulse generator on the transmission to increase the interval counter. The Black Slate wire to pin “OXY” connects to the warning light on the dash and is powered from the ignition switch. So it appears that the Service Interval Counter is essentially a normally off relay that closes when the preselected interval is reached internally based on signals from the Yellow wire turning on the dash warning light. There are a few ways to disable that light by disconnecting wires but be mindful that some of the wires will be hot when the ignition switch is not off and the battery is connected. You can also just remove the bulb in the warning light if you prefer to disable it that way.
That’s awesome …good to know thank you very much for the info!!!
The only reason that the car has that counter and light is that it wouldn’t make it through the required mileage with the emissions required without changing the O2 Sensor. So they wanted a light to come on so you would change the O2 sensor. No real reason to change it as they usually work fine far longer than when the light comes on.
As I recall the magic number is 30,000 miles