* Low brake fluid: This is the most common and easiest to check. Low brake fluid can trigger both lights. Check your brake fluid reservoir (usually a clear plastic container near the master cylinder) and add fluid if necessary. However, adding fluid without addressing the underlying cause is a temporary fix; a leak needs to be found and repaired.
* Faulty wheel speed sensor: These sensors monitor the speed of each wheel, providing data for the ABS and traction control systems. A malfunctioning sensor can cause inaccurate readings, triggering the warning lights. This is a relatively common failure point.
* Faulty ABS module: The ABS module is the computer that controls the anti-lock braking system. A failure in the module itself can cause both lights to illuminate. This is a more expensive repair.
* Faulty traction control module: Similar to the ABS module, a problem with the traction control module can trigger both warning lights.
* Problems within the braking system: Issues such as worn brake pads, sticking calipers, or a failing master cylinder can indirectly affect the ABS and traction control systems.
* Wiring issues: Damaged or corroded wiring related to the ABS or traction control systems can also cause the warning lights to come on.
* Low tire pressure: While less likely to trigger *both* lights simultaneously, significantly low tire pressure in one or more tires can sometimes confuse the system and activate the lights. Check your tire pressure.
What you should do:
1. Check your brake fluid level immediately. Low fluid is a serious safety concern.
2. Check your tire pressure.
3. Have the vehicle scanned with an OBD-II code reader. This will provide diagnostic trouble codes (DTCs) that pinpoint the specific problem. Many auto parts stores will scan your vehicle for free.
4. Take your Monte Carlo to a qualified mechanic. Based on the DTCs or if you can't find a simple cause like low brake fluid, a professional mechanic will be able to diagnose and repair the issue.
Ignoring these lights is risky. Driving with faulty ABS and traction control can significantly reduce your braking and handling performance, increasing the risk of an accident.
