Hi guys.

I cover with my 1994 850 Turbowagon about 10,000 km every year, and so my car’s service light is “on” every 7,500 km. I do the complete service inspection at 15,000; 30,000; 45,000 km (and so on) and I only change oil at 22,500; 37,500; 52,500 km (and so on).

I had to reset the service light of my 1994 850 Turbowagon (I had never done myself), and so I followed the instructions on volvospeed.com:

Remove the top to diagnostic connector "A", note the yellow arrow pointing to the jumper that will be used. With the top off remove the jumper and insert it into the socket labeled Number 7. With the jumper in place you will begin to communicate with the instrument cluster. Depress the button circled in pink 4 times (about ½ second on the depression time). The red light to the left of the circle will blink once, now depress the button once, the light will blink once, depress the button 5 times, the light will blink once, depress the button once, the light will flicker. The flickering is hard to see some times, but you are now finished, remove the jumper and replace it to lid. The numbers you need to remember are 4 - 1 - 5 - 1-----, some use the phrase "four shots of 151 rum". Think if the dashes between the numbers as the light communicating with you.

So I did, and the light now is “off”.

But when will the light be “on”, next time? After 7,500 km/1 year (such as usually), or after 15,000 km/1 year?

Here my question: is possible to program the lighting interval?

In the four numbers above, you can see 1 and 5. Do they perhaps mean “15” (15,000 km) or are they the normal light reset code?

I hope to have been clear (in spite of my bad English).

Thanks in advance.

Paolo M.