I had the same problem, and since I couldn't find the answer here, I had to figure it out myself. Luckily, I was able to find this site again, so here's what worked for me.
Push the Setup button three times, until your driver display says something like "Press Reset for system check".
Then push Reset. The system check will start, rotating through a series of checks.
About the fifth or sixth check will be the tire pressure. It'll say something like "Hold Reset if tires are OK". While that's up, hold the Reset button. After 3 or 4 seconds, the tire warning light will click off. You need to be ready for it, because you don't get very long.
Sorry if I don't have the prompts exactly right. I remembered them the best I could, and since I held in the Reset button, I don't get the one about the tires being OK any more.
How to reset the low tire pressure warning if the vehicle does not have the "Message Center"
The low tire warning indicator light will flash three times as the low tire warning system begins to initialize.
This information is detailed and illustrated in the Owners Manual - See "Related Questions" below
check brake fluid level.
It is the "Check Tire" light. If you don't have low tire pressure, perhaps you hit a hard bump, our 2004 Monterey van does this once a while. Run a system check on the dash and hit Reset when it comes to the tire choice 7 it will clear.
Smaller tires should not cause the check engine light to come on. Smaller tires will cause the speedometer to be off.
aliens are invading
Check your tires!
Make a sign that says Tires 4 Sale! then light tires on fire and people will come to check it out.
Check the air pressure in all tires and adjust it to the recommended PSI.
On a 1997 Mercury Mountaineer : The " CHECK ENGINE " warning light is just to the left of the battery voltage gauge
my check engine light stays on and the o/d light blinks....what could this mean?
Worn out tires or wrong sized tires. Check tire size first, then check wear. When replacing worn tires do ALL of them, not just the front or rear.
Check and fix the engine.
Check bulbs Check Fuse Check stop light switch
the horseshoe shaped light is your low tire pressure warning light. check your tire pressure in all of your tires. the light will turn off once the tires are at the proper PSI.
Straight from the Owners Manual (see Related Questions below):LOW TIRE WARNING - INDIRECT (IF EQUIPPED)The low tire warning system is designed to detect a significant loss ofinflation in any one of your tires on your vehicle. The system uses theAnti-lock brake wheel speed sensors to detect a change in wheel speeddue to tire deflation.Resetting the indicator / warning light:Reference the Owners Manual and / or see "Related Questions" below
If your check engine light is flashing , an engine cylinder misfire has been detected
New tires for your light truck can be purchased at any local tire store. Some that you may want to check out are Goodyear, BF Goodrich, or Michelin. Sometimes you can even purchase tires at Sears and Costco.
It means at least one of your tires pressure is too deflated. Check the pressure and inflat the tires to the correct pressure and rest the light.
All the tires have a sensor to measure tire pressure. If any of the tires (including the spare) are low in tire pressure the light will be on. Just check all tires. Don't know why theres a sensor for the spare but after you check the pressure to make sure that it's correct the warning light should go out. If it still is on and all your tires have the correct pressure then I'd take it to the dealer to have it checked out.
Is it like this:(!)If so, that is the TPMS (Tire Pressure Monitoring System) light. When lit, it is indicating that one or more of your tires are low.
Have vehicle scanned to determine the problem
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
If the check engine light is blinking that means that an engine cylinder misfire has been detected
By bringing it to a trained mechanic so they can check the engine is running properly (which if the light is on it's probably not)
The check " gage " light on in your 1997 Mercury Mountaineer indicates that either your engine oil pressure is LOW , your engine temperature is HIGH or your gas tank is AT OR NEAR EMPTY .