There is a peg you can push in near the speedo- once you remove a little rubber plug. So you guys with earlier cars - don't race out and by a tool. Mine is the cheapest base model with 5 speed bought in 12/94.

1997 huh? Not sure if that was OBD I or II.

If it is OBDII then you would need a scan tool. They can be had for cheap. I have a cable that connects to my laptop and run VOL-FCR software.

For OBDI cars there`s a diagnostic breakout in the engine bay. At the front of the engine bay on the passenger side, beside the radiator, you should see 2 boxes labled A and B. Lift off the cover for side A and you should see a fly wire that can be placed inside the series of holes under the cover. With the engine off connect the hole into hole no. 7. Go into the car and turn the key to position 2 (position right before you start the engine)Go back to the engine bay, where you were and press the button beside the LED 1 time and it should read any codes that are held in the system. Codes are 3 digits. So it should flash a sequence of flashes 3 times with a pause between each. Remember the first sequence you see. It helps to write it down. Press the button once again for the next code. When the first sequence is repeated you can reset. Press and hold the button for over 5 seconds. Upon release the light should turn off then on again. While the light is on, press and hold again for another 5+ seconds. Press the button one more time and watch the sequence. It should be 1 1 1, the code for no codes. Take your key out of the ignition, remove the fly wire from the hole and place the cover back on.

That will reset the service light, if done properly. This is only for OBDI engines though, which may not even apply to you. Good luck

What an absurd concoction. They should have made this user friendly on any car they put it on, but they didn't.

Obviously, the asutute owner will *know* when it is time to service his engine.

The special tool I would recommend is to take the dash pad off, yank the "Service" light out of the dash and crush it under your feet into tiny bits for satisfaction.

Putting electrical tape over that area doesn't work too well, because the light seeps out with an annoying glow (and you know what is underneath)

The first time you take the pad off, you figure out the few "sticking" points. Getting the vents out seems like it may be a problem, but they pop out. Then the pad and cluster has to be worked at a funny angle if you don't remove it fully. Or you can disconnect the ABS stuff (using the proper procedure to avoid a reset issue) and take the pad all the way off. I have done both and recommend the latter.

The procedure is out there on the web for dash pad removal. You want one that covers the ABS disconnect/reconnect sequence. The guy that had my car previously went to the stealer after having the pad off, just to reset the ABS.

Or you can fork over a ridiculous amount of money for a tool that is single purpose (actually dual - taking your money is the second one).

Or you can go to the stealer.

There are 4 ways to 'handle' the service light:

A dealer can turn it off if you get it 'serviced there', $$$.

You can buy a special tool to turn it off, $$$.

The next time you change bulbs in the instrument panel, remove the bulb for the service light.

A small piece of black electrical tape works wonders.

I used it to remind me NOT to use the turbo while the light is on.

Klaus

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Proud owner of a 220S. If I had more room, I would have more Volvos.