How To Turn Off ESP Bas Light Jeep? Causes & Step-by-Step Guide
Seeing an ESP BAS warning light suddenly come on in your Jeep can be worrying. This guide will walk you through the potential causes and how to turn off or reset the ESP BAS light in your Jeep Wrangler, Liberty, Cherokee or other Jeep model.
The ESP BAS indicator light illuminates to alert drivers that there may be an issue with the Electronic Stability Program (ESP) system or Brake Assist System (BAS) in the Jeep. These are important safety and stability features, so it’s important to diagnose and resolve the underlying problem.
Fortunately, in many cases the ESP BAS light can be reset or turned off using some simple troubleshooting steps. Let’s look at what you need to know to get your Jeep back on the road safely.
Table of Contents
What Does the ESP BAS Light Mean in a Jeep?
The ESP system in Jeep vehicles helps improve stability and prevent skids or loss of traction when turning or braking suddenly on slippery surfaces. It does this by selectively applying the brakes or reducing engine torque to keep the Jeep stable during abrupt maneuvers.
BAS provides extra brake pressure in emergency braking situations to reduce stopping distance. This system works closely with ABS anti-lock brakes.
A key component of the ESP and BAS systems is the steering angle sensor (SAS). This sensor detects the steering wheel position and inputs this to the vehicle’s computer.
When the ESP BAS light illuminates, it indicates there may be an issue with the SAS sensor or the stability and braking control systems in the Jeep. The light serves as an early warning to get the problem diagnosed and repaired promptly.
Common Causes of the ESP BAS Light Coming On
There are a few common issues that can trigger the ESP BAS warning light in your Jeep:
Faulty Steering Angle Sensor
The steering angle sensor is a critical part of the ESP system. It provides constant feedback to the computer about the steering wheel’s position. If this sensor develops a fault or becomes inaccurate, it will turn on the ESP BAS light.
Symptoms of a faulty sensor include the light coming on with no other issues, or the Jeep’s stability systems activating randomly for no reason. Having the steering wheel off center when the car is driving straight can also indicate a bad sensor.
Testing and replacing the steering angle sensor will typically resolve the issue if it is malfunctioning.
Wheel Speed Sensor Problems
The wheel speed sensors monitor how fast each wheel is rotating. This data allows the stability control system to compare wheel speeds and identify loss of traction at any wheel.
If one or more wheel speed sensors is damaged or reading incorrectly, it can trigger the ESP BAS light. Signs of wheel speed sensor issues include the ABS or traction control lights also coming on, or inconsistent braking power between wheels.
Inspecting and replacing any faulty wheel speed sensor will clear the warning light if this is causing the problem.
Bad Connection or Wiring
Like most sensors and electronics, the ESP system relies on good wiring and connections to operate properly. If there is a loose connector, damaged wire, or corrosion in the circuit, it can cause erratic sensor readings.
Carefully inspect the connectors and wiring related to the steering angle sensor, wheel speed sensors, and brake/ABS modules. Fix any loose plugs, damaged cables, or wires with excessive resistance.
Calibration Needed
The steering angle sensor periodically needs recalibration to operate within specifications. This is especially important after any steering or suspension repairs or adjustments.
If the sensor is miscalibrated, it will turn on the ESP BAS light. Performing the recalibration procedure after any steering system service can resolve this light issue.
Low Battery Voltage
The electronic stability systems are very sensitive to voltage levels. A weak battery or loose battery cables can cause low supply voltage, triggering the ESP BAS light and other erroneous warning lights.
Test the battery and recharge or replace it if needed. Also check for loose, corroded, or damaged battery cables and terminals. Tightening and cleaning the connections can help resolve low voltage issues that affect the stability systems.
How to Turn Off ESP BAS Light in a Jeep – Step-by-Step?
Here is a step-by-step guide to diagnosing and resetting the ESP BAS warning light in your Jeep:
1. Inspect Steering Angle Sensor and Wiring
- Turn the steering wheel fully to the left and right to check that the sensor reacts properly.
- Visually inspect the connectors and wiring for any damage. Make repairs if needed.
2. Recalibrate the Steering Angle Sensor
- Drive above 25 mph and turn the steering wheel fully left and right to allow the Jeep to recalibrate the sensor if it is just out of specification.
- This can clear the ESP BAS light if it is just a calibration issue.
3. Use a Scan Tool to Read ABS and ESP Fault Codes
- Connect an OBD2 scan tool and read for any ABS, ESP, or sensor related fault codes.
- Diagnostic trouble codes can direct you to the root cause, like a particular wheel speed sensor.
4. Test the Battery and Cable Connections
- Use a voltmeter to check the battery state of charge and voltage.
- Check for corrosion on the battery terminals – clean if needed.
- Ensure the battery cables are tightly fastened.
5. Disconnect the Battery to Reset the System
- If other steps don’t resolve the issue, disconnect the battery cables for 30 seconds to reset the Jeep’s computer system.
- This can clear fault codes and make the ESP BAS light turn off.
These troubleshooting steps should switch off the ESP BAS indicator light and get your Jeep’s stability systems back to full operation. Let’s look at some frequently asked questions about dealing with this warning light in your vehicle.
FAQs – Understanding the Jeep ESP BAS Light
Is it Safe to Drive with the ESP BAS Light On?
It is generally not recommended to drive extensively with this warning light illuminated. The ESP or BAS systems may not be working properly, affecting stability and braking safety. Diagnose and repair the problem promptly. Carefully drive short distances if needed.
Should I Take My Jeep to a Mechanic Right Away?
Not necessarily in every case. First perform basic checks like recalibration and voltage testing to reset the light when possible. If those steps don’t resolve it, then visiting a mechanic for diagnostics and possible repairs is a smart next step.
What Are Common Repair Costs for ESP BAS Light Issues?
Simple fixes like tightening loose connectors or cleaning the battery cables have minimal to no repair cost. Replacing a faulty steering angle sensor can range from $150-350 for parts and labor. Bad wheel speed sensors can cost $100-200 per sensor to replace.
How Urgent Are Repairs When This Light Comes On?
It’s important to investigate the cause in a timely manner, as the ESP or BAS not operating properly impact braking and stability safety. Avoid driving aggressively and take highway trips until the problem is properly diagnosed and fixed. Schedule service within a few days or week if possible.
In Summary
Hopefully this guide has taken some mystery out of what to do when the ESP BAS light appears in your Jeep’s dashboard. To recap, the key steps are:
- The light indicates an issue with the Electronic Stability Program or Brake Assist system – important safety features in your vehicle.
- Potential root causes include a faulty steering angle sensor, bad wheel speed sensor, wiring faults, calibration needed, or low voltage.
- Try turning the steering wheel to reset the sensor, checking codes for guidance, and inspecting battery/cable condition.
- Fixing loose connectors, replacing damaged sensors, or recalibrating will typically resolve the problem.
- Consider having a mechanic diagnose and repair the light if basic troubleshooting does not work.
Addressing the ESP BAS light promptly when it turns on will keep your Jeep’s traction, stability and braking systems working their best while driving. Use this guide to troubleshoot the warning light and get back on the road confidently.
