Are you kidding me? No one out there is smart enough to even respond, that's sad.
The reason that the light comes on is an electrical fault in the AWD system. it could be the sensor in the front axle the shift motor in the transfer case or one of the other 7 sensors or electric motors in the system. Now this will sound crazy but i swear it works most of the time, if this light comes on (and this will work for most AWD and 4x4 models for gm) find a empty parking lot w/ no light poles or obstacles put the vech. in question in reverse and cut the wheel all the way to one side (it doesn't matter, right or left you pick) and drive in reverse for about 3-5 complete circles and 80% of the time the light will go off after about 5 miles of normal driving (after you are done just get back on the road and drive).
The airbag computer has detected a malfunction. You will need to take it to a qualified service shop for repair.
possibly bad earth on the indicator circuit, or poor output from the generator. check the voltage when running at the battery, should be around 13 volts. if ok, check all the earth points. Hope this helps.
It is hereditary. Also an indicator of Juvenal Diabetes.
vss sensor
Many brake pads have a "warning indicator" which will squeak when the brake pads start to get near the end of their life. This "warning indicator" is usually nothing more than a small metal tab that protrudes out from the side of the pads backing plate pointing towards the brake rotor. As the pad wears, the distance between the metal tab and the brake rotor begins to shorten until a point is reached where the metal tab actually comes in contact with the break rotor. This causes the squeak as a warning to the driver that the break pads are low.
If you are referring to the turn signal indicator - that means that one of the bulbs in the circuit is blown out.
A substance that turns universal indicator green is a base. Bases have pH levels higher than 7, which causes the universal indicator to turn green.
Disc brakes do not have springs to retract the pads form the rotors, therefore they are millimeters from touching and even dust can make them hiss. However if they screech when applying, this is usually the wear indicator rubbing against the rotor warning you to replace the pads.
I'm not sure about all of these, but I have a 98 Taurus and the battery light came on. After a few days, the car died altogether and I had to replace my alternator. I would definitely take the battery indicator seriously and have your alternator checked.
You could have an electrical problem that causes the warning to not trigger. If you are using a copied key, it may not register with the warning system.
Iodine is an indicator for starch. The reaction between iodine and starch causes a color change from brown/orange to blue/black.
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.