How do you turn the traction control on?

ANSWER : Hi there. Check all of the grounds to the vehicle and see if there is any wires that are damaged from the taillight short. A loose ground will cause multiple problems with the electrical system and some or multiple components will not work. If you need further assistance with your electrical issues, then seek out a professional, such as one from Your Mechanic, to help you.

ANSWER : Traction control helps with the stability of the vehicle in all conditions and works with the ABS system to ensure that the vehicle can stop fast and keep the vehicle in a safe condition on any roadway condition. I recommend keeping your traction control on if the roads are slick, wet, icy, snowy, or if you are off on a dirt road. If the roads are dry and you are driving in more of a straight line and not going around a sharp corner, then I suggest turning the system off.

ANSWER : The traction control and vehicle stability control (VSC) are key safety features that help your car safely drive in poor weather. However, in select circumstances (such as when you are stuck in the mud or snow), the traction control and VSC can reduce power to the wheels, and be detrimental. When that is the case, you can turn off these systems by pressing and holding the traction control and VSC off button, which is located to the left of the steering wheel. TRAC Off and VSC Off indicators will illuminate on the instrument panel to confirm that the systems are off.

Tip

Never keep the traction control and VSC system off unless you need to for specific purposes.

ANSWER : The traction control system provides your vehicle with added traction during adverse weather conditions. This system can be turned on or turn off with just a few steps:
1. Press the Up/Down buttons on the steering wheel until Settings is displayed on the instrument panel, then press the OK button.
2. Press the Up/Down buttons until Driver Assist is displayed, then press the OK button.
3. Press the Up/Down buttons until Traction Ctrl is displayed, then press the OK button.
4. Select On or Off.

ANSWER : I do not recommend driving the vehicle until the car is diagnosed as to why the lights came on. The issue may constitute your vehicle to be unsafe to drive and should only be driven only to get to a safe stopping location. If you’d like to get this fixed, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose your Check Engine Light firsthand and help you fix it accordingly.

ANSWER : Hi there. The symptoms you’re describing with your boyfriend’s 2002 Grand Cherokee appear to be related to a broken or worn out ignition switch or relay. The ignition switch on the inside of the steering column is attached to multiple electronic connections that send signals to a relay box; which in turn, sends the signal to the individual components. The issue could be related to the ignition switch, the relay, or any of the components in between. If you want to have the fault pinpointed in person, I would have this starting issue inspected by a trained professional to ensure that the correct repair is made.

ANSWER : Your car has what Mercedes calls the Driver Authorization System. "DAS" if the DAS does not recognize your key via an electronic code, it will not start at all. If your car starts and shuts off immediately, there is some other problem. It could be a problem in the fuel pump relay, which runs the pump while you crank the car, then waits for a signal from the ECU to keep it running after the car starts. But don’t run out and buy a fuel pump relay yet, they are expensive and there might be some other issue. You need to have the car diagnosed by someone with the right scan equipment and knowledge of the system. Otherwise you might end up buying a lot of expensive parts that you don’t need. If you contact Your Mechanic, they can send a technician to your home or office to diagnose your Mercedes and recommend a fix.

ANSWER : ABS, traction and stability control systems rely on input from a number of sensors to function properly. Faults can be in any one of them from the brake light switch, steering angle sensor, wheel speed sensor, or up to a dozen others. Also, a fault code can be present for any of the sensors without the sensor itself being the actual fault. A wiring issue to that sensor or a fault in the abs/traction control computers can also be the cause. The only sure way to find out why the abs and traction control lights are on is to diagnose the system properly. The airbag light can be related if for example, the steering angle sensor is faulty as it provides input for the airbag system as well as abs, traction, and stability control systems. It can also be a stand-alone issue. When the system is scanned, fault codes will provide a direction to take in diagnosing the problem, but isn’t always as simple as replacing "Sensor A". Replacing parts without confirming they are actually the cause of the fault can be more expensive in the long run. Most electronic parts are not returnable once installed so if you replace a random part that does not correct the problem, you are stuck with the cost of that part and still have the same issue.