The service vehicle soon warning light is a vehicle monitoring system that tracks all of the chassis control systems. It's usually contained in the instrument panel. The service vehicle soon light comes on when there is a fault condition in an area of the vehicle chassis systems such as—the anti-lock (ABS) brake system, the traction control (TCS) system, the electronic suspension system, or the brake hydraulic system. The service vehicle soon monitoring system also serves as a backup in case the warning lights for the primary vehicle chassis systems cannot illuminate properly.
The Bulb Check: Service Vehicle Soon Light
The service vehicle soon light should come on when the vehicle is started and should go out in 1 to 2 seconds. If it stays on, then look at the instrument panel for another warning light.
What to Do: Service Vehicle Soon Light
What to do when this light comes on depends on what other light also illuminates. If the ABS light is illuminated, the ABS is not working. If the red hydraulic brake light is on, then act accordingly and pull the vehicle to a safe place on the side of the road and have it towed to a repair shop. When in doubt, pull the vehicle to a safe place on the side of the road and read the vehicle owner's manual to determine what system is at fault and what action should be taken.
This should not be confused with the Service Engine Soon (SES) Light equipped on some vehicles. The SES light is the Check Engine Light for many vehicle models. It is a good idea to read your vehicle owners manual and familiarize yourself with your vehicle's warning lights to prevent any confusion.