Service 4 Wheel Drive Warning Light Activated? (Top 7 Reasons)
RepairSmith
DECEMBER 8, 2023
Bad Transfer Case Switch and Position Sensors If the transfer case switch (4WD selector switch) or position sensors malfunction, your vehicle might get stuck in one mode, triggering the SERVICE 4WD warning light. They’ll remove the knee bolster and dash bezel to access electrical components or switches that require service or replacement.
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