94' Q: Interesting Observation on Slip/TCS Light Problem

[sdkhalsa]

Today after having had the Slip and TCS light constantly on for the last 9 months, it suddenly went off for a while this morning after the temperature dipped into the 30's last night . It occurred to me that the problem might be discoverable testing circuitry and components with a heat source(hair dryer) and/or a cold source(dry ice, regular ice, or CO2 spray). I think that the area that I would first go for is near the TCS pump below the battery as there is some indication that dripping battery acid may be doing in the relays and/or electrical connectors. Has anybody tried this approach? I thought that it might be a little more efficient than trying to work through the wiring and components.

[qship96]

clean up the acid with baking soda rinse,and replace both relays....most likely all you need to do to solve this common issue.

[GseaQ]

I cleaned up the contacts and replaced both relays 4-5 years ago after the TCS would only work in warm, dry weather (we had a snow blower like that years ago, too). Problem solved except for two occurrences earlier this year (weeks apart). Both times restarting the engine fixed it and hasn't happened since.