On occasion, both of these lights come on. When I turn the car off and restart, they go off. I read somewhere that this could be due to the brakes heating up, probably meaning a stuck / frozen caliper. Anyone encounter this?

Have same problem with ABS light on my 1995. Try wiggling the ignition switch next time the light comes on -- If it goes off, then it's the switch.

ABS/TRACS control module problems plague the 96 and 98 model years. Since yours is a 95, I'd suspect the ignition switch.
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David \\ (98 S70 T5SE Black, misc mods (mostly lighting), red calipers) (92 940GLE)

It's a common problem with 850s, most likely a wiring / ABS/TRACS controller issue. Do a search on this or any other 850 message board and you'll gets loads more stories/info

A shot of WD40 into the ignition switch might be worth a try as this, too, can cause theese symptoms

Pat
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'97 855 That does 50,000 miles anually