Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC C2130: Brake Lamp Relay Error: General Description
The Downhill Brake Control (DBC) function helps the driver control the vehicle when going down a steep hill. When a vehicle goes down hill, pushing the DBC switch enables the car to keep its vehicle's speed at a constant value without operating the brake pedal. The DBC function is operated when the vehicle is on the decline and its velocity is under the predetermined speed. The Hill start Assist Control (HAC) function helps the vehicle not sleep when start up on a steep hill. The HAC function is operated when the vehicle is on the decline and brake lamp is illuminated when the HAC is operating.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.