98 s70 -- cold induced brake warning

gbuchana · Post by **gbuchana** » 27 Jan 2009, 21:27

I park my s70 indoors at home and at work and so it does not see the full rigours of our -20C weather too often. But I had occasion to park it outside for 48 hours at -25C or so this weekend. It started up fine, but on starting the brake warning light is on.

What kind of things cause this warning light? Will pulling the codes tell me any specifics? As far as I can tell the brakes work normally, as does the ABS and TRACS. I'll have my local independent check it out, but I'm curious if there are any typical things to look out for.

Post by **MadeInJapan** » 27 Jan 2009, 21:33

Low brake fluid...
Maybe the extreme cold found a leak?

gbuchana · Post by **gbuchana** » 28 Jan 2009, 10:36

Small leak at the fitting on R/F caliper. The level was getting low. Probably cold-induced shrinkage of the remaining fluid put me under the switch's sense level.

Is fluid level the only thing that this light tells me? I thought it would twig to booster vacuum problems and hydraulic system imbalances and all sorts of other stuff.

Post by **MadeInJapan** » 28 Jan 2009, 19:39

I believe that light only comes on when the level is low.