Nissan Armada 2025-2026 Service and Repair Manual: Precautions

Precautions for Removing Battery Terminal

• When disconnecting the 12V battery terminal, turn off the ACC power before disconnecting the 12V battery terminal, observing “How to disconnect 12V battery terminal” described below.

  

  NOTE:

  Some ECUs operate for a certain fixed time even after ignition switch is turned OFF and ignition power supply is stopped. If the battery terminal is disconnected before ECU stops, accidental DTC detection or ECU data damage may occur.

• For Nissan Armada vehicles with the 2-batteries, be sure to connect the main battery and the sub battery before turning ON the ignition switch.

  NOTE:

  If the ignition switch is turned ON with any one of the terminals of main battery and sub battery disconnected, then DTC may be detected.

• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.

  NOTE:

  The removal of 12V battery may cause a DTC detection error.

HOW TO DISCONNECT 12V BATTERY TERMINAL

Disconnect 12V battery terminal according to instruction described below.

1. Open the hood.

2. Turn ignition switch to the ON position.

3. Turn ignition switch to the OFF position with the driver side door opened.

4. Get out of the vehicle and close the driver side door.

5. Wait at least 3 minutes. For vehicle with the engine listed below, remove the battery terminal after a lapse of the specified time.

   BR08DE	: 4 minutes	R9N engine	: 12 minutes
   BR10DE	: 12 minutes	V9X engine	: 4 minutes
   D4D engine	: 20 minutes	YD25DDTi	: 2 minutes
   HR09DET	: 12 minutes	YS23DDT	: 4 minutes
   HR10DDT	: 12 minutes	YS23DDTT	: 4 minutes
   HR10DET	: 12 minutes	ZD30DDTi	: 60 seconds
   HR13DDT	: 12 minutes	ZD30DDTT	: 60 seconds
   HRA2DDT	: 12 minutes	K9K engine	: 4 minutes
   M9R engine	: 4 minutes	R9M engine	: 4 minutes

   CAUTION:

   While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of this caution results in the activation of ACC power supply according to the Auto ACC function.

6. Remove 12V battery terminal.

   CAUTION:

   After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision.

Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.

Precaution for Brake System

WARNING:

Since dust covering the front and rear brakes has an affect on human body, the dust must be removed with a dust collector. Never splatter the dust with an air blow gun.

• Recommended brake fluid. Refer to Fluids and Lubricants.

• Never reuse drained brake fluid.

• Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it off immediately and wash with water if it gets on a painted surface.

• Always confirm the specified tightening torque when installing the brake pipes.

• After pressing the brake pedal more deeply or harder than normal driving, such as air bleeding, check each item of brake pedal.

• Bleed the air using CONSULT. (Unable to bleed the air without using CONSULT) Refer to Work Procedure.

• Always clean with new brake fluid when cleaning the master cylinder, brake caliper and other components.

• Never use mineral oils such as gasoline or light oil to clean. They may damage rubber parts and cause improper operation.

• Always loosen the brake tube flare nut with a flare nut wrench.

• Tighten the brake tube flare nut to the specified torque with a flare nut torque wrench (A).

  

• Turn the ignition switch OFF and disconnect the ABS actuator and electric unit (control unit) harness connector or the battery negative terminal before performing the work.

• Check that no brake fluid leakage is present after replacing the parts.

• Burnish the brake contact surfaces after refinishing or replacing rotors, after replacing pads, or if a soft pedal occurs at very low mileage.

  • Front brake pad: Refer to Inspection and Adjustment.

  • Front disc rotor: Refer to Inspection and Adjustment.

  • Rear brake pad: Refer to Inspection and Adjustment.

  • Rear disc rotor: Refer to Inspection and Adjustment.

• Before removing the electrical brake control unit, reduce pressure of accumulator using the CONSULT. (Unable to reduce the pressure without using CONSULT) Refer to Work Procedure.

• Turn the ignition switch OFF and disconnect CONSULT from data link connector. Get out of the vehicle, close all doors (including hood assembly), check that the room lamp is OFF, and wait for 2 minutes or more without opening these doors. Disconnect the electrical brake control unit harness connector, ABS actuator and electric unit (control unit), or the 12V battery negative terminal before performing the work.

  CAUTION:

  Never operate the vehicle.

• After removing/installing or replacing chassis-related parts such as brake component parts, axle component parts, and suspension component parts, perform self-diagnosis after the work is completed. If a malfunction is detected, erase self-diagnosis results.

  CAUTION:

  To perform self-diagnosis, turn ignition switch OFF → ON → OFF → ON.

• When operating the brake pedal or opening the driver side door, motor sound may be heard from electrical brake control unit. This is liquid pressure filling (pressure accumulation) sound and not a malfunction.

• When the brake pedal is depressed when the ignition is not ON, the brake pedal will feel heavy and the stroke will be shorter. When the unfamiliar feeling disappears and the brake warning lamp is OFF after the brake pedal was depressed, then this is not a malfunction. When the brake warning lamp is ON, use CONSULT and perform the “ABS/BRAKE” self diagnosis.

• During air bleeding between electrical brake control unit and each brake caliper, brake warning lamp and brake system warning lamp may turn on. When warning lamp turn on, erase the "self diagnosis result" using CONSULT and perform self diagnosis again. If any malfunction occurs, check the related DTC. Refer to DTC Index.

• When malfunction occur to the power supply system of electrical brake control unit (no voltage supply), the brake warning lamp and brake system warning lamp turns on and warning buzzer sounds when the accumulator pressure decreases.

• When any malfunction occurs with electrical brake control unit, VDC will control the brake.

• Depending on vehicle condition (Auto ACC OFF etc.), when the brake pedal is depressed to start the engine, you may feel the pedal effort is changed and pedal may go down further than usual. This is normal and does not indicate a malfunction.

• When a malfunction occurs in the 12V battery, the braking force is determined by the force pressing on the brake pedal (no boost operation). At the same time, the brake warning lamp and the brake system warning lamp turns ON.

• When a malfunction occurs in the electrical brake control unit and the VDC function, the braking force is determined by the force pressing on the brake pedal (no boost operation). At the same time, the brake warning lamp and brake system warning lamp turn ON.

• When the brake pedal operation feels abnormal or vibration occurs, perform self-diagnosis of “BRAKE”. Refer to DTC Index.

Precaution for when Jacking and Lifting Up the Vehicle with Electronic Air Suspension System

WARNING:

• When jacking up or lift up the vehicle, always turn OFF the electronic air suspension function with the vehicle unladen and normal height, since the suspension may accidentally move and it can lead to personal injury.

• When removing the air suspension component parts, always follow the removing procedure since the vehicle height may accidentally drop and it can lead to personal injury.

CAUTION:

When jacking up or lift up the vehicle, always turn OFF the electronic air suspension function with the vehicle unladen and normal height to prevent damage to the air suspension component parts.

OPERATION PROCEDURE

Jacking up or lift up using the following steps.

1. Start engine.

2. Turn auto height mode control switch to ON, shift the shift position to N and set to normal height.

3. Turn OFF the electronic air suspension function. Refer to Operation.

4. Stop engine.

5. Jacking up or lift up.

Precaution for Electronic Air Suspension System

WARNING:

• When removing the air suspension component parts, always follow the removing procedure since the vehicle height may accidentally drop and it can lead to personal injury.

CAUTION:

• Never expand and contract the air spring of shock absorber.

• Never expand and contract the air spring.

• Never let foreign materials entered into parts.

• Always check for the air leakage with soapy water after working.

• Be sure to close the hood after working.

• Turn ON the electronic air suspension function after working. Refer to Operation.

• Air suspension component parts may be rusted if de-icer is put in excessively to prevent freezing because it cannot remove moisture in pneumatic circuit.

• Replacing suspension component parts other than genuine parts may cause low performance of air suspension and calibration failure.