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.
Heated Seats
The manual climate control module contains the heated seat control buttons and indicators. The heated seat system functions independently from the climate control system.
A heated seat relay is located underneath each heated seat cushion frame. There are 2 voltage supplies to the heated seat relay. Voltage is supplied from the smart junction box (SJB) to each heated seat relay coil when the engine is running. Ground is supplied to the opposite side of the driver or passenger relay coil by the respective heated seat relay drive output circuit from the manual climate control module when a heated seat switch button is pressed to energize the affected relay. This closes the relay contact to supply battery voltage from SJB to the driver or passenger heater elements. The driver and passenger heater elements are directly connected to ground, completing the electrical circuit to heat the seats. The cushion and backrest heater elements are wired in series.
The heated seat will remain ON until a 10 minute time-out occurs or the system or vehicle is switched off.
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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.