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 MANUALSINFINITI2019Q70 3.7 LUXE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1 (INTERIOR LIGHTING SYSTEM)SYMPTOM DIAGNOSISINTERIOR LIGHTING SYSTEM SYMPTOMSSYMPTOM TABLE

2019 Infiniti Q70 3.7 Luxe, AWD

Symptom Table

2019 Infiniti Q70 3.7 Luxe, AWDSECTION Symptom Table

WARNING: This page is about a different car, the 2019 Infiniti Q70L. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Perform the self-diagnosis with CONSULT before the symptom diagnosis. Perform the trouble diagnosis if any DTC is detected.

Symptom	Possible cause	Inspection item
All the following lamps do not turn ON. Map lamp Rear spot lamp Vanity mirror lamp Foot lamp Front kicking plate lamp Rear kicking plate lamp Step lamp Outside handle lamp Trunk room lamp	Harness between BCM and each interior room lamp BCM	Interior room lamp power supply circuit Refer to Component Function Check .
Interior room lamp does not turn ON even though the door is open. (It turns ON when turning the interior room lamp ON.) Interior room lamp does not turn OFF even though the door is closed.	Harness between BCM and each door switch Harness between BCM and each interior room lamp BCM	Door switch circuit Refer to Component Function Check .
		Interior room lamp control circuit Refer to Component Function Check .
Interior room lamp timer does not activate. (It turns ON/ OFF when the door opens/closes.)	--	Check the interior room lamp setting. Refer to CONSULT Function (BCM - INT LAMP) (Long Wheel Base Models) .
Outside handle lamp does not turn ON even though the door is open. Outside handle lamp does not turn OFF even though the door is closed.	Harness between BCM and each door switch Harness between BCM and outside handle lamp BCM	Door switch circuit Refer to Component Function Check .
		Outside handle lamp circuit Refer to Diagnosis Procedure .
Trunk room lamp does not turn ON even though the trunk lid is open. (It turns ON when turning the trunk room lamp ON.) Trunk room lamp does not turn OFF even though the trunk lid is closed.	Harness between BCM and trunk closure assembly Harness between BCM and trunk room lamp BCM	Trunk lid open signal circuit Refer to Component Function Check .
		Trunk room lamp circuit Refer to Diagnosis Procedure .
Step lamps (ALL) do not turn ON. Step lamps (ALL) do not turn OFF.	Harness between BCM and each step lamp BCM	Door switch circuit Refer to Component Function Check .
		Step lamp circuit Refer to Component Function Check .
Push-button ignition switch illumination does not illuminate.	Harness between BCM and push-button ignition switch BCM	Push-button ignition switch illumination circuit Refer to Component Function Check .
Interior room lamp battery saver does not activate.	BCM	Replace BCM. Refer to Removal and Installation .

RENDER: 1.0x

NO RELATED

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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.