Service Bulletin

25-038

January 26, 2026

Version 3

Product Update: 2024 ZDX Rear Electric Drive Module (eAxle)
Replacement
Supersedes Version 2 to revise information at:
Under PARTS INFORMATION, controlled parts ordering information was revised.
APPLIES TO
Year

Model

Trim Level

2024

ZDX

A-Spec, Type S

VIN Range
Check the iN VIN status for eligibility.

BACKGROUND
During the manufacturing process of the rear electric drive module (eAxle), the mounting nut may have been improperly
torqued or misaligned, potentially resulting in a loose or cross-threaded condition. This condition could lead to fluid
leakage from the rear drive module, accompanied by a whine noise, possibly leading to a loss of driving force.
CLIENT NOTIFICATION
Owners of affected vehicles will be sent a notification of this product update.
Do an iN VIN status inquiry to make sure the vehicle is shown as eligible.
Some vehicles affected by this campaign may be in your new or used vehicle inventory. Repair these vehicles before they
are sold.
CORRECTIVE ACTION
Replace the rear electric drive (eAxle) module assembly.
WARRANTY CLAIM INFORMATION
A-Spec
Operation
Number

Description

Flat Rate
Time

Defect
Code

Symptom
Code

Template
ID

Failed Part Number

1181HS

Replace Rear Electric
Drive Module eAxle
(includes alignment)

4.6hr

6WY000

WMX00

B25038A

24066926

Replace Rear Electric
Drive Module eAxle with
Air Suspension (includes
alignment)

6.8hr

6WY000

WMX00

B25038B

24066925

Type S

1181HR

CLIENT INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not assume this
bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an authorized
Acura automobile dealer.

© 2026 American Honda Motor Co., Inc. – All Rights Reserved

Page 1 of 13

PARTS INFORMATION
NOTE: The rear electric drive modules are controlled parts. Create a Tech Line contact and call Tech Line to order.
Part Name

Part Number

Quantity

Rear, Electric Drive Module (eAxle) 2WD

24066917RM

1

Rear, Electric Drive Module (eAxle) AWD

24066925RM

1

Bolt, Rear Drive Motor Mount (M14 x 2 x 113)

11603529

2

Bolt, Rear Drive Motor Mount (M12 x 1.75 x 115.9)

11589282

1

Bolt, Rear Drive Motor Mount (M12 x 1.75 x 60)

11609605

3

Bolt, Rear Stabilizer Shaft Link

11588744

2

Bolt, Rear Shock Absorber

11589358

2

Bolt, Rear Suspension Trailing Arm

11609606

2

Bolt, Rear Suspension Inner Control Arm (Upper)
(M14 x 2.0 x 75)

11610884

2

Bolt, Rear Cradle Bracket (M12 x 1.75 x 45.8)

11519538

6

Bolt, Rear Suspension Cradle (M16 x 2 x 127)

11589375

4

Harness, RR Chassis (Type S)

85051529

1

Harness, RR Chassis (Non-Type S)

85051530

1

Part Number

Quantity

BEVF Type PZ

08200-9025

4 quarts

LL Coolant (Type-PZ)

OL999-9033

4 gallons

Tool Number

Quantity

KLS6227500

1

07AAK-TYBA102

1

07-J-36857

2

Engine Support Fixture Adapter Bolts

07-EN-52059

3

Transmission Fluid Fill Pan Adapter

07-DT-47784

1

07-GE-46143-A

1

07-GE-47716

1

REQUIRED MATERIALS
Part Name

TOOL INFORMATION
Tool Name
Propulsion, System Lift Equivalent
Air Suspension Charger
Engine Lift Bracket

Cooling System Adapter
Vac-N-Fill Coolant Refill Tool or equivalent

Page 2 of 13

REPAIR PROCEDURE

DANGER
Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection.
Personal Protection Equipment (PPE) and proper procedures must be followed. Failure to follow the procedures will
result in serious injury or death.
NOTE: Review all High Voltage Safety information and the Job Aid: High-Voltage Battery Storage and Handling prior to
starting repairs.
The High Voltage Disabling procedure includes the following steps:
• Identify how to disable high voltage.
• Identify how to test for the presence of high voltage.
• Identify conditions under which a high voltage is always present and Personal Protection Equipment (PPE) and proper
procedures must be followed.
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
• Safety glasses with appropriate side shields when within 15 meters (50 feet) of the vehicle, either indoors or outdoors.
• Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
• Visually and functionally inspect the gloves before use. Wear insulation gloves with leather protectors at all times
when working with the high voltage battery assembly, whether the system is energized or not.
Type S Only:

CAUTION
DO NOT remove the Automatic Level Control System components, the system is pressurized. Disconnecting a
pressurized air line that is connected to an Automatic Level Control System component can cause damage to
components and/or result in injury.
1. Before lifting the vehicle set the suspension to service mode.
To enter service mode use the vehicle’s infotainment screen:
Settings > Vehicle > Suspension > Service Mode, move the slider to the right to activate Service Mode
2. Connect the Multiple Diagnostic Interface 2 (MDI2) and use the Honda Techline Connect (TLC) application to deflate
the rear left and right air springs.
Follow the path to deflate the air springs:
Control Function > Automatic Level Control Module > Short Term Deflate > Select Enter and Repeat

Page 3 of 13

Rear Suspension Cradle Removal
1. Follow steps 1 and 2: Rear Suspension Cradle Removal and Installation
2. Disconnect the 12 volt battery negative cable. Battery Negative Cable Disconnection and Connection
3. Raise and support the vehicle. Lifting and Jacking the Vehicle
4. Remove the rear wheel and tire assemblies. Tire and Wheel Removal and Installation
5. Remove the underbody rear air deflectors:
1. Underbody Rear Air Rear Deflector Replacement - Rear
2. Underbody Rear Air Rear Deflector Replacement - Middle
3. Underbody Rear Air Rear Deflector Replacement - Front
6. Release both Rear Wheelhouse Liners.
7. Drain the coolant from the rear drive motor:
7.1 Release the retainer [1] and remove the rear electric drive coolant hose [3].
7.2 Drain the coolant in a suitable container.
7.3 Disconnect the wiring harness connector [2] and unclip the wiring harness retainers [4].
NOTE: Disconnect the coolant hoses and electrical connectors at the rear electric drive module. Move the hoses and
electrical connectors out of the way to prepare the rear electric drive for removal.

8. Release the retainer clip [1] and disconnect the drive motor control module cooling outlet hose [2]. Remove the high
voltage battery heater coolant hose retainer.

Page 4 of 13

9. Release the retainer [1] and disconnect the rear drive motor control module cooling outlet hose [2]. Remove the high
voltage battery heater coolant hose retainer clip [3]. Drain any remaining coolant in a suitable container.

10. Disconnect the left and right electrical connector [1] and clip [2] at the rear parking brake actuator.

11. Remove the left and right rear brake caliper [1] guide pin bolts [2].
NOTE:
• DO NOT remove the rear brake caliper bracket bolts.
• DO NOT use air tools to remove the guide pin bolts. Use hand tools only.
• DO NOT disconnect the rear brake hose.

Page 5 of 13

12. Remove both rear brake calipers and support them using mechanic’s wire or equivalent.

Failure to support the brake calipers with mechanic wire or an equivalent may cause damage to the brake hose and
brake fluid to leak.
13. Support the suspension control arm with a hydraulic jack or equivalent. Remove the left and right rear shock absorber
bolt [1] and nut [2]. Retain the nuts, discard the bolts.
NOTE: The bolts are a must replace part.

14. Type S Only: Secure the left and right air spring suspension to the vehicle using tie down straps [1]. Do not trap the
brake hose or the air suspension lines.

15. Follow steps 16 to 29: Rear Suspension Cradle Removal and Installation

Page 6 of 13

16. Remove the body ground bolts [3] first, then remove the bolts and wiring harness brackets [4]. Leave the wire harness
[2] on the retainers [1]. Reposition the body ground strap away from the rear electric drive module.

17. Follow steps 33 to 41. Rear Suspension Cradle Removal and Installation

Page 7 of 13

Rear Electric Drive Transmission Module Removal.
1. Follow steps 1 to 6: Separate the rear suspension cradle from the rear electric drive transmission module. Rear
Electric Drive Transmission Module Removal Procedure
Type S equipped with Air Leveling Position Sensor, proceed with step 2.
Non-Type S continue to step 3.
2. Remove the rear headlamp leveling sensor bolt [1] and nut [2]. Rear Suspension 2 or 4 Corner Air Leveling
Position Sensor

3. Remove the upper bolt [1] and upper nut [2] from the rear suspension trailing arm [3]. Repeat the procedure for both
sides. Retain the nuts, discard the bolts.
NOTE: The bolts are a must replace part.

Page 8 of 13

4. Remove the rear suspension upper control arm inner nut [1] and bolt [2]. Repeat the procedure for both sides. Retain
the nuts, discard the bolts
NOTE: The bolts are a must replace part.

5. Follow steps 13 to 17: Rear Electric Drive Transmission Module Removal Procedure
6. Using the overhead engine hoist carefully separate the rear suspension cradle from the rear electric drive module. Set
the rear suspension cradle on a level surface.

7. Follow steps 19 to 23: Rear Electric Drive Transmission Module Removal Procedure
8. Attach the engine lift bracket and support fixture adapter bolts to the old rear electric drive module. Use the overhead
hoist and remove the rear electronic drive module off of the propulsion lift system. Set the module on flat surface, use
wood blocks to level the module.

Page 9 of 13

9. Transfer the engine lift bracket and support fixture adapter bolts to the NEW rear electric drive module, use the
overhead hoist and place the NEW rear electronic drive module onto the propulsion lift system.

Remove and Transfer Components to the New Rear Drive Module.
1. Install a new rear chassis harness [1] to the NEW rear electric drive module.

Page 10 of 13

2. Transfer the rear electric drive coolant hose [1] to the NEW rear electric drive module.

3. Transfer the rear motor mount [2] to the NEW rear electric drive module. Use new motor mount bolts [1] and follow the
steps for torquing:
1. Torque all bolts to the specified torque 100 N·m (74 lb-ft).
2. Tighten the bolts an additional 75° degrees.

4. Attach the engine lift bracket and support fixture adapter bolts to the old rear electric drive module. Place the
defective drive module core into the crate with all original shipping materials for return.

Page 11 of 13

INSTALLATION PROCEDURE
1. Follow steps 1 to 24 of the Installation Procedure to Install the rear suspension cradle onto the rear electric drive
transmission module. Rear Electric Drive Transmission Module Replacement
NOTE: The new electric drive module will have the output shaft O-rings and retainer clips installed.

This vehicle is equipped with torque-to-yield or single use fasteners. When instructed, install NEW torque-to-yield or
single use fastener when installing components. Failure to replace torque-to-yield or single use fastener could cause
damage to the vehicle or its components.
Type S equipped with Air Leveling Position Sensor, proceed with step 2.
Non-Type S, continue to step 3.
2. Install the rear headlamp leveling sensor bolt [1] and nut [2]. Rear Suspension 2 or 4 Corner Air Leveling
Position Sensor

3. Follow steps 1 to 29 of the Installation Procedure to install the rear cradle to the vehicle. Rear Suspension Cradle
Removal and Installation

This vehicle is equipped with torque-to-yield or single use fasteners. When instructed, install NEW torque-to-yield or
single use fastener when installing components. Failure to replace torque-to-yield or single use fastener could cause
damage to the vehicle or its components.
After step 29, follow this step:
4. Reinstall the left and right rear brake calipers [1] and guide pins [2]. Torque the guide pins to 40 N·m (30 lb-ft).
NOTE: DO NOT use any air tools to install the guide pins. Use hand tools only.

Page 12 of 13

5. Follow Installation Procedure steps 32 to 39. Rear Suspension Cradle Removal and Installation
After step 39, follow these steps:
6. Fill the rear electric drive with new transmission fluid to the proper level. Transmission Fluid Drain and Fill
7. Enable the high voltage system. High Voltage Enabling
8. Connect the 12 volt battery negative cable. Battery Negative Cable Disconnection and Connection
9. Fill the drive motor battery cooling system to the proper level. Drive Motor Battery Cooling System Draining and Filling
10. Type S Only:
Perform the following ONLY if the air supply reservoir tank is empty or needs slight filling.
1. Remove the automatic level control air supply reservoir coupling cap.
2. Install air suspension charger (P/N 07AAK-TYBA102) to the automatic level control air supply reservoir air valve
and set the regulator on the nitrogen tank to 15 Bar (217.55 PSI).
3. Open the air suspension charger valve on the pressure gauge to fill the automatic level control air supply
reservoir.
4. Use nitrogen to fill the automatic level control air supply reservoir to 15 Bar (217.55 PSI).
5. Close the air suspension charger valve on the pressure gauge and remove from the automatic level control air
supply reservoir.
6. Install the automatic level control air supply reservoir coupling cap and tighten 2 N·m (18 lb in).
11. Type S Only:
1. Partially lower the vehicle, DO NOT let the wheels touch the ground.
2. Connect the MDI2 and use Honda Techline Connect (TLC) to verify the automatic level control air supply tank
pressure is at 15 Bar (217.55 PSI).
3. Use short-term inflate to increase pressure to the rear air springs:
•
•

FRONT: 7 Bar (101.526 PSI)
REAR: 7 Bar (101.526 PSI)

12. Type S Only: Perform Automatic Level Control Trim Height Learn.
NOTE:
• The battery voltage range must be 9-15.5 volts with the ignition set to ON and the engine OFF.
• Vehicle ride height must be within specification to complete procedure successfully. Refer to Trim Height
Inspection and Trim Height Specification.
13. Measure and adjust the wheel alignment. Wheel Alignment Measure
14. Verify proper operation of the transmission.
15. Inspect for coolant leaks.
16. Inspect for transmission fluid leaks.

Page 13 of 13