What causes the ABS light and traction control light to illuminate simultaneously in a Bora?
3 Answers
The simultaneous illumination of the ABS light and traction control light in a Bora may indicate a faulty sensor. A constantly lit ABS light signifies an anti-lock braking system alert. Normally, this light turns on when the ignition is switched on or the engine is started, as the system enters its automatic diagnostic procedure. Upon completion of the diagnostic check, the light should turn off. If the light fails to illuminate when the ignition is switched on, remains lit without turning off, or lights up while driving, it indicates a system malfunction. The ABS system controls the regulator by sending signals through sensors installed on the wheels, reducing the hydraulic pressure of the wheel brakes to decrease braking torque. This enhances the safety factor of the vehicle during emergency braking, achieving a braking efficiency of over 90% and reducing brake wear. If the ABS system of the vehicle malfunctions, it is necessary to thoroughly inspect the vehicle's wiring and connectors for any signs of poor contact or damage. Additionally, the installation gap between the wheel sensors and the toothed rings should be promptly checked to ensure it is within normal parameters.
I've been driving my Bora for several years and encountered the issue of both ABS and traction control lights illuminating simultaneously, which is usually caused by sensor problems. The wheel speed sensor is a common culprit, as it can get clogged with mud or water ingress leading to signal interruption, making the system think there's a fault and triggering the warning lights. If the ABS control module malfunctions, such as internal short circuits or aging, it can also cause both lights to come on. Additionally, insufficient brake fluid or air in the lines can affect the traction control system's operation. I recommend first checking the fluid level and sensor cleanliness. Safety first - when these lights are on, brake assist may be disabled, causing skidding during emergency braking. Don't risk driving on highways; get to a professional shop immediately to read the fault codes for diagnosis. When washing your car regularly, pay attention to cleaning the wheel rims to prolong sensor lifespan.
As a DIY enthusiast, when the ABS and traction control lights both illuminate on my Bora, I start with the simplest checks. First, inspect the wheel speed sensors: crouch down to see if they're dirty or loose, clean them, or use a multimeter to check their resistance. Low brake fluid level is another common cause—pop the hood and check the reservoir, topping up with DOT4 fluid if needed. Corroded ground wires can also trigger false alarms, so examine the wiring near the battery for damage. It’s best to have an OBD scanner handy to read error codes and address issues directly. If these steps don’t resolve it, it’s time to hand it over to a professional—safety is paramount, so don’t overdo the DIY. Remember, regular maintenance helps prevent such issues.
