Start by figuring out what the cause of the fault it, then go from there. Check for power at the lights. If you don't have that, check for continuity in the switch. If you don't have that, replace the switch.
were is the iac locate on a 1999 mercury mystique
According to the 1998 Mercury Mystique Owner Guide : ( 61.5 litres / 16.2 U.S. gallons )
To remove the dashboard from a 1998 Mercury Mystique, start by disconnecting the battery to ensure safety. Then, remove the screws and clips securing the dashboard, which are typically located around the instrument panel and under the trim. Carefully detach any electrical connectors for gauges and controls, and gently pry the dashboard away from the mounting points. Make sure to keep track of all screws and connectors for reassembly.
In a 1998 Mercury Mystique, the fuse box is located under the dashboard on the driver's side. You can find it by looking beneath the steering column, near the brake pedal. There is typically a panel that you can remove to access the fuses. Additionally, there is a second fuse box located in the engine compartment near the battery.
yes
common problem with 1998 mystique check engine light on
On a 1998 Mercury Mystique : To the left of your tachometer is the seatbelt reminder light and Under your fuel gauge is the airbag readiness light ( if the light stays on or flashes take your vehicle in to have the airbag ( Supplemental Restraint System , SRS ) system checked out / repaired
No , coil pack
HAVE AN AUTO STORE OR SHOP HOOK UP THE OBD2 SCANNER TO SEE WHAT CODES ARE
Yes, but if it stays on you should plan to take it in soon to have the engine checked. That is why the light is there.
The OBD-II diagnostic port for a 1998 Mercury Mystique is located under the dashboard on the driver's side. You can find it near the steering column, often just above the brake pedal. It may be covered by a small panel or simply exposed, so you might need to look closely to locate it.
That should be OBD 2