Seeing a “Service AdvanceTrac” message on your Ford’s dash? This common alert signals an issue with your vehicle’s traction control system whether you drive an F150, Fusion, Edge, Explorer, and Expedition.
Though concerning, AdvanceTrac problems are fixable across Ford models. Read on to learn what causes these messages and simple solutions to get your Ford back on track.
What is Service AdvanceTrac?
AdvanceTrac is Ford’s proprietary version of Electronic Stability Control (ESC). It’s similar to what Honda calls VSA and other brands may use different names for their stability control systems.
This system is intended to prevent vehicle skid during extreme circumstances, thereby minimizing the risk of an accident.
Ford’s AdvanceTrac system is relatively complex in nature, and utilizes a series of sensors to monitor wheel speed, as well as various other facets of vehicle stability.
The system actually combines several individual safety systems into a single integrated system, in order to further minimize the chance of a traction-loss induced accident. Ford’s AdvanceTrac system possesses the following capabilities:
Anti-Lock Brake Function
Anti-Lock brake systems prevent a vehicle from skidding under panicked braking conditions. When one or more wheels lock under significant brake pressure, this stoppage is communicated to a vehicle’s ABS controller by way of a wheel speed sensor.
This software then commands the system’s ABS pump motor/valve body assembly to rapidly pulsate brake pressure to the affected wheel, thereby breaking the skid.
Traction Control Function
A traction control system compares data from speed sensors at each wheel end location. If the system’s controller detects an irregularity in wheel speed from one wheel to the next, power to any wheel that displays excessive speed will be cut, or brake pressure will be applied.
This effectively evens the speed between each of a vehicle’s four wheels, thereby remedying any prior loss of traction.
Directional Orientated Stability Control Function
Vehicles now rely upon numerous sensors to identify vehicle instability, as skidding occurs. These sensors relay a comprehensive picture of the vehicle’s orientation while in a skid, to a specified controller, which adjusts power output and brake pressure to each wheel as needed for stabilization.
Sources of feedback for this operation include steering wheel angle sensors, yaw rate sensors, and accelerometers.
Why Does the “Service AdvanceTrac” Warning Light Come On?
Several failures could trigger a Service AdvanceTrac warning light. Here are some of the possible causes.
#1. Bad Wheel Speed Sensor.
A wheel speed sensor (also called an ABS sensor) is embedded into each of the four wheel hubs. These sensors detect the speed at which each tire is spinning. The ECU maintains this data and uses it to determine a vehicle’s trajectory, and when one or more tires have lost traction.
A bad wheel speed sensor may not send this data to the ECU. With incomplete sensor data, the AdvanceTrac system will not be able to adequately measure and correct vehicle trajectory. This would trigger a warning light.
#2. Mismatched Wheels or Tires.
Many owner’s manuals include a warning that vehicle modifications may adversely affect the stability control system. Fords are no exception.
If your vehicle has any modifications to the wheel or tire size, or you’re running a mismatched set of tires, the stability control system may find certain sensor values to be outside the acceptable range for normal operation.
Although the tires may appear to be the same shape and size, mismatched tires will give different wheel speed sensor readings. In this case, it may be hard for the AdvanceTrac system to control the car in the event of a skid.
The AdvanceTrac system was programmed to work for a specific tire diameter.
#3. Broken Clock Spring.
A bad clock spring (also called a spiral cable) is a coil of wires that feeds power to the steering angle sensor, the steering wheel buttons, and the airbag.
A broken clock spring could interrupt the signal between the ECU and the steering angle sensor, rendering the AdvanceTrac system inoperable. In this case, you will notice other symptoms such as broken steering wheel controls and an airbag warning light.
#4. Limp Mode.
If your vehicle has entered limp mode, chances are the AdvanceTrac system will not work. Limp mode triggers several warning lights, and among these is often the Service AdvanceTrac warning.
#5. Bad Ground or Wiring Issue.
A bad ground can cause all sorts of problems with sensors, depending on the ground location and which sensors are on that part of the circuit.
If you think you have a bad ground, first check that all your ground straps are connected with a clean and tight connection. If multiple sensors are acting up, this may help you narrow down the location of the bad ground.
You may need to use a wiring diagram from a repair manual to help you track down the source of the problem.
#6. Faulty Rotational Speed Sensor.
Just like the wheel speed sensor, this sensor plays a crucial role in the proper functioning of your vehicle’s ABS system. If this particular sensor malfunctions, it can lead to issues with the ABS module, which controls the ABS system and can result in the AdvanceTrac warning light being triggered.
#7. Faulty Steering Angle Sensor.
The steering angle sensor is responsible for measuring the angle at which your steering wheel is turned, and it sends signals to your vehicle’s electronic control unit (ECU) to help maintain stability. If the sensor goes bad, it can affect your vehicle’s ability to maintain stability, resulting in the warning light.
#8. Low Brake Fluid.
Lastly, low brake fluid in your vehicle can trigger the “Service AdvanceTrac” warning light.
Low fluid levels can compromise your vehicle’s braking system, and the warning light serves as an alert to check and address this issue. In most cases, you’ll also the brake warning light illuminating.
How To Fix AdvanceTrac Problems
- Check for Error Codes: If your AdvanceTrac system indicates a problem, use an OBD-II scanner to check for error codes. These codes can help diagnose the issue.
- Inspect Sensors and Wiring: Inspect the wheel speed sensors and their wiring for damage or corrosion. Clean or replace as necessary.
- Check ABS Module: Ensure the ABS module is functioning correctly. If there are issues with the module, it may need to be replaced or reprogrammed.
- Inspect Braking System: Check the brake pads, rotors, and calipers for wear and damage. A malfunctioning braking system can affect the AdvanceTrac system.
- Reset the System: Sometimes, resetting the system can resolve minor issues. To reset, disconnect the battery for a few minutes, then reconnect it.
- Software Update: Ensure your vehicle’s software is up to date. Sometimes, updating the software can resolve compatibility issues.
- Professional Inspection: If you’re unsure or unable to resolve the issue yourself, it’s best to take your vehicle to a qualified mechanic or Ford dealership for a thorough inspection and service.
It is possible, at the very least, to diagnose some components of the AdvanceTrac system yourself, with the proper knowledge and tools.
Diagnosing Service AdvanceTrac Problems
Mechanics use special tools and processes to diagnose any issues with your AdvanceTrac system, including the following:
- They use a diagnostic tool to check your car’s computer to identify any problems.
- They look for specific error codes related to the AdvanceTrac system.
- They visually inspect the system components to detect damage or wear.
- They test each sensor and check the wiring to make sure everything is working and connected properly.
This process helps mechanics pinpoint the exact problem with your AdvanceTrac system. Once they’ve identified the issue, they can make repairs and get your car back on the road.
Step-By-Step Guide for Resetting the Service AdvanceTrac Warning Light
In some cases, you can reset the Service AdvanceTrac warning light yourself with the following process:
- Turn your car’s ignition to the On position, but don’t start the engine.
- Press and hold the gas pedal for 5 seconds.
- Turn the key to the Off position and remove it from the ignition.
- Wait for about 10-15 seconds.
- Start your car and see if the warning light is off.
This method may not work for all Ford models. If there’s a real problem with your AdvanceTrac system, the light will probably come back on. If that happens, or if you’re not comfortable trying this yourself, it’s best to take your car to a professional.
Can You Continue Driving With the Service AdvanceTrac Light On?
When faced with an AdvanceTrac system issue, you can still drive your vehicle without any ill-effects. However, most vehicles automatically disable all AdvanceTrac related functions, when an active system fault has been detected.
While this is never an ideal situation, you are no more in harm’s way, than when driving a vehicle that is not equipped with a stability control system.
AdvanceTrac related issues are not detrimental to a vehicle’s driveability, as is often the case when an engine or transmission-based trouble code is stored. In this instance, your vehicle is simply attempting to bring your attention to an underlying fault in its stability system.
However, it is recommended to have your vehicle’s AdvanceTrac system serviced at the first available opportunity, to restore your car’s safety to an optimal level.
In the meantime, it is also imperative to take extra caution when traversing slick or hazardous roadways, such as those encountered following wintry precipitation or heavy snowfall.
How Much Does Service AdvanceTrac Repair Cost?
Generally, you can expect to pay between $100 and $250, excluding labor charges. This can vary depending on your mechanic and repair shop’s location. You may also have to pay for other repairs, like a blown fuse or switch.
What Is the Difference Between the Traction Control System & AdvanceTrac Technology?
The Traction Control system primarily controls the rear wheel spin. So spinning the rear tires makes the traction control pull engine power and apply rear brakes to prevent spinning.
Service AdvanceTrac is a type of Traction Control that performs a similar function. However, it also applies a front brake to pull the vehicle back into a horizontal line.
Note: A lit Traction Control Light (TCL) isn’t always bad. Sometimes, it just means that the Traction Control system is working. Always make a point of understanding what the TCL means for your specific vehicle.