Kia Forte Brake Light Switch Guide: 2010-2018 Problems and Solutions
Solve issues like brake light failure, an active ESC light, or being stuck in Park by understanding this critical part.
- Check for the 2012-2014 model year recall (SC158) related to the brake pedal stopper pad, which causes identical symptoms.
- A bad switch affects more than just lights; it can trigger the ESC warning light, prevent shifting from Park, and disable cruise control.
- This is a low-cost, high-success DIY repair, but proper adjustment of the new switch is critical for correct function.
- Driving without functional brake lights is a major safety risk and should be addressed immediately.
Common Failure Symptoms
A problem with the brake light switch, or a related component, can cause several issues in your Kia Forte. Because the switch communicates with multiple vehicle systems, you might notice more than just brake light problems.
- Brake Lights Don't Work or Stay On: The most obvious sign is your brake lights not turning on when you press the pedal, or staying on constantly even when the car is off.
- ESC/Traction Control Light On: The 'ESC OFF' or traction control light may illuminate on your dashboard because the stability system relies on an accurate signal from the brake switch.
- Can't Shift Out of Park: The safety interlock that prevents you from shifting out of Park without braking may not disengage.
- Cruise Control Won't Work: The cruise control system may not set or might cancel unexpectedly.
- Push-Button Start Fails: If you have a push-to-start model, the car may not start because it doesn't detect that the brake pedal is depressed.
Important Recall Information (2012-2014 Models)
Kia issued a safety recall (NHTSA Campaign ID: 17V773000, Kia Recall #SC158) for 2012-2014 Kia Forte and Forte Koup models. The issue was a deteriorating brake pedal stopper pad—a small rubber/plastic bumper that the switch presses against. When this pad breaks down, the switch plunger can remain extended, making the car think the brake is always pressed. This leads to symptoms like brake lights staying on, the ESC light coming on, and being able to shift from Park without braking. The recall procedure involves replacing this stopper pad, not the switch itself. Even if your vehicle is outside this year range, it's wise to inspect this small pad, as owners of other model years have reported similar failures.
Choosing the Right Aftermarket Brake Light Switch
When shopping for a new aftermarket brake light switch, you'll find several brands available. For a simple electronic switch like this, most aftermarket options provide a reliable, cost-effective alternative to the OEM part. There is little evidence from owner forums to suggest that one brand is significantly better than another for this specific part on the Forte. Your choice can be based on price and availability.
- Standard Replacement Brands (e.g., Dorman, Standard Ignition): These companies are major players in the aftermarket. They design their parts to match the fit and function of the original equipment. They offer a dependable repair without the higher cost of an OEM part.
- Value Brands (e.g., True Tech): These brands focus on providing a functional replacement at the lowest price point. For a simple switch, these can be a good option if budget is your primary concern.
- OEM-Focused Brands (e.g., Beck Arnley, Vemo): These brands often source parts from a variety of manufacturers, sometimes including the original suppliers for Kia. They aim to provide a part that is very close to the original in terms of form and function.
Cost of Replacing a Kia Forte Brake Light Switch
Replacing the brake light switch is an inexpensive repair, whether you do it yourself or take it to a shop.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Part | $11 - $40 |
| Shop Labor | $44 - $65 |
| Total Professional Repair | $81 - $105 |
DIY Installation Tips
Replacing the switch is a feasible DIY job that takes less than an hour. The switch is located on a bracket above the brake pedal arm. You will need basic tools, like a 14mm wrench. 🎬 Watch this step-by-step guide to replacing the brake light switch. The most important step is adjustment. The switch is threaded and held by two nuts. After installing the new switch, you must adjust its depth so the plunger is fully depressed when the pedal is released, but activates as soon as you apply light pressure to the pedal. Improper adjustment can cause the brake lights to flicker, stay on, or not come on at all.
Frequently Asked Questions
Why is my ESC light on but my brakes work fine?
The Electronic Stability Control (ESC) system needs to know when you're braking. If the brake light switch sends an incorrect or intermittent signal, the ESC computer will log a fault and turn on the warning light as a precaution, even if your physical brakes feel normal. 🎬 Learn how a faulty switch causes the Check ESC warning. This is a very common symptom of a failing switch or stopper pad on the Forte.
My brake lights are stuck on and drained my battery. Is it the switch?
Most likely, yes. This happens when the switch fails in the 'on' position or, more commonly on these cars, when the plastic stopper pad on the brake pedal arm disintegrates. Without the stopper, the switch plunger pokes through the hole and is never depressed, causing the lights to stay on constantly. Check for small, broken plastic bits on your driver-side floor mat.
🎬 See how to quickly replace a broken brake pedal stopper pad.Can I still drive my Forte with a bad brake light switch?
It is not recommended. If your brake lights are not working, other drivers cannot see when you are slowing down, which is a critical safety hazard. If your brake lights are stuck on, it can confuse other drivers and drain your battery. You should get the vehicle repaired as soon as possible.
Is it hard to replace the brake light switch myself?
No, it is considered an easy repair. It requires working in the driver's footwell, which can be uncomfortable, but the process is simple. You disconnect the wire, loosen the locking nuts, unscrew the old switch, and install the new one. The key is to properly adjust the new switch's position before tightening it down.
Helpful Videos
Technical Specifications
OEM Part Numbers: 93810-3S000 93810-2E000 93810-3K000
Typically a 4-pin, plunger-style switch mounted on the brake pedal bracket. The position is adjustable via threaded body and lock nuts.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Kia Forte: