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.
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HOMESERVICE MANUALSBUICK2018REGAL BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTIGNITION SWITCH/STEERING LOCKSTEERING WHEEL AND STEERING COLUMNDIAGNOSTIC INFORMATION AND PROCEDURESHEATED STEERING WHEEL INDICATOR MALFUNCTIONCIRCUIT/SYSTEM DESCRIPTION
2018 Buick Regal Base
Circuit/System Description
2018 Buick Regal BaseSECTION Circuit/System Description
For an overview of the component/system, refer to:Steering Wheel and Column Description and Operation
| Circuit | Description |
|---|---|
| Ignition circuit | Supplied from a relay. |
| Control Circuit | The output circuit is switched to ground to activate the component. |
| Signal circuit | When the switch is activated, the signal circuit to the control module is grounded. |
| Ground circuit | Chassis Ground |
| Component | Description |
|---|---|
| K32 Steering Wheel Heating Control Module | When the control module receives a signal from the switch S70L it switches the steering wheel heating and the indicator On/Off. The control module is located inside the steering wheel. |
| S70L Steering Wheel Controls Switch - Left | The position of the switch S70L is read by the control module K32. The switch assembly has 1 function(s): E15 Steering Wheel Heater |
RENDER: 1.0x
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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.