Lexus NX: If the hybrid system will not start

Reasons for the hybrid system not starting vary depending on the situation.

Check the following and perform the appropriate procedure:

The hybrid system will not start even though the correct starting procedure is being followed.

One of the following may be the cause of the problem:

The interior lights and headlights are dim, or the horn does not sound or sounds at a low volume.

One of the following may be the cause of the problem:

The interior lights and headlights do not turn on, or the horn does not sound.

One of the following may be the cause of the problem:

Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures are unknown.

Starting the hybrid system in an emergency

When the hybrid system does not start, the following steps can be used as an interim measure to start the hybrid system if the power switch is functioning normally.

Do not use this starting procedure except in cases of emergency.

1. Set the parking brake.

2. Shift the shift lever to P.

3. Turn the power switch to ACCESSORY mode.

4. Press and hold the power switch for about 15 seconds while depressing the brake pedal firmly.

Even if the hybrid system can be started using the above steps, the system may be malfunctioning. Have the vehicle inspected by your Lexus dealer.

If you lose your keys

New genuine mechanical keys can be made by your Lexus dealer using another mechanical key and the key number stamped on your key number plate. Keep the plate in a safe place such as your wallet, not in the vehicle.


■When an electronic key is lost If the electronic key remains lost, the risk of vehicle theft increases significantly.

Visit your Lexus dealer immediately with all remaining electronic keys and the card key that were provided with your vehicle.

If the fuel filler door cannot be opened

If the fuel filler door opener switch cannot be operated, the following procedure can be used to open the fuel filler door.

Opening the fuel filler door

1. Remove the cover inside the luggage compartment by inserting a screwdriver.

When removing the cover, to prevent damage, cover the tip of the screwdriver with a rag.

Lexus NX. Steps to take in an emergency

2. After removing the cover, pull the lever to unlock the fuel filler door and it will be ready to open as usual.

Lexus NX. Steps to take in an emergency


 If the electronic key does not operate properly

If communication between the electronic key and vehicle is interrupted or the electronic key cannot be used because the battery is depleted, the smart access system with push-button start and wir

 If the 12-volt battery is discharged

The following procedures may be used to start the hybrid system if the vehicle's 12-volt battery is discharged. You can also call your Lexus dealer or a qualified repair shop. Restarting the hy

 If your vehicle overheats

The following may indicate that your vehicle is overheating. The needle of the engine coolant temperature gauge enters the red zone, or a loss of hybrid system power is experienced. (For


 Rear Motor Resolver Circuit

DESCRIPTION The cause of this malfunction may be the rear motor resolver. Check the rear motor resolver internal resistance and connection condition from the inverter to the resolver. Related Parts Check Area Inspection Step Wire harness and connector between the inverter and rear motor r

 Terminals Of Ecu

TERMINALS OF ECU CLEARANCE WARNING ECU ASSEMBLY (a) Disconnect the I20 clearance warning ECU assembly connector. (b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description C

© 2016-2022 Copyright