According to my info on some '96 models there is a service reset button on the dash display. Look near the trip reset button to see if there's a small rubber plug. Remove the plug and turn the ignition on. Stick a thin device through the opening and push on the reset switch pin. This should reset the service light.

This girl at work had a Renault Alliance. One day her car won't start. With about 65,000 miles on it she had never changed the oil. If a car that was trash to start with can last that long before officially becoming trash, an 850 can miss a few changes and still be a great car!

Good Luck!!

96-97 850s and 98 SV70s all have similar electronics and require 1.) the reset tool ($178 from IPD) 2.) the dealer 3.) remove the bulb or 4.) an 8mm piece of 3M black electrical tape placed over the light ($1.39, Home Depot). (Guess which one I chose!)

It should go out after 2 minutes anyway. Seriously, good luck with your purchase!

-BTC

'98 V70 T5M, 153k mi, front IPD stabilizer bar, rear factory HD bar, Bilstein HD, Volvo strut tower brace and skidplate, e-codes, V-1, Mobil-1 since new

if it is a 94 or older 850 you reset the service light by entering a code in the little diagnostic boxes near the washer resivoir.

Yeah the tranny fluid is changed by flushing it out via the cooler return line. Should be changed every 25k miles since there's no filter. I installed a Magnefine 3/8" inline filter in the return line too. You can get a Service Light reset tool for the '96-'98 850 online for about $50, usually from England. Draper is the maker of the tool.

http://www.justoffbase.co.uk/s.nl/sc.9/category.191/it.A/id.15747/.f


You can also get one from IPD for a little more money.



Mike
'95 850T

Forget the service light! It will go out on its own after a few minutes. It's just a nuisance to anyone who keeps his own service records.

And flusing the tranny per the other post is simple, no torx bolts to remove and can be done in about 20 minutes. I use Mobil 1 ATF, highly recommended. Use Mobil 1 oil also.

86 850T 96K miles

You need to visit volvospeed.com (Bay13) for maintenance instructions and good guidance.

Hold off on the auto tranny flush until you catch up on some reading. No need to take any torx nuts off for a tranny flush.

IPD sells a kit for the tranny flush. It's not really necessary- I've done it twice with a clear hose and bucket and about 14 quarts of Mobil 1 Synthetic ATF (the recommended way to go). In your case , flush with dyno atf the first time and run a week or two - then flush again with the Mobil1 syn ATF.

Happy Holidays !