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TECHNICAL BULLETIN
LTB00420NAS3
02 SEP 2014
© Jaguar Land Rover North America, LLC
NOTE: The information in Technical Bulletins is intended for use by trained, professional Technicians with the knowledge, tools, and
equipment required to do the job properly and safely. It informs these Technicians of conditions that may occur on some vehicles, or
provides information that could assist in proper vehicle service. The procedures should not be performed by 'do-it-yourselfers'. If you
are not a Retailer, do not assume that a condition described affects your vehicle. Contact an authorized Land Rover service facility to
determine whether this bulletin applies to a specific vehicle.

This reissue replaces all previous versions. Please destroy all previous versions. Only refer to the electronic
version of this Technical Bulletin in TOPIx.

Changes are highlighted in gray

SECTION: 204-05

Air Suspension Compressor Replacement
AFFECTED VEHICLE RANGE:
LR3 (LA)
Model Year:
VIN:

2005-2009
5A000360-9A513325

LR4 (LA)
Model Year:
VIN:

2010-2012
AA510742-CA638964

Range Rover Sport (LS)
Model Year:
2006-2013
VIN:
6A900129-DA768550

MARKETS:
NAS

CONDITION SUMMARY:
Situation: The Air suspension warning lamp may be illuminated, the air suspension may fail to raise the vehicle, and
Diagnostic Trouble Code (DTC) C1A20-64 may be stored. Vehicles within the above VIN ranges have been fitted with
either a Hitachi or an old-design AMK suspension compressor.

NOTE: Two different types of air suspension compressors have been used - Hitachi and old-design AMK
- as per the VIN ranges listed below:
Cause: This may be caused by a faulty air suspension compressor.
• Hitachi
- LR3 (L319): 5A000360-9A513325
- Range Rover Sport (L320): 6A900129-9A215622
• AMK (old-design)
- LR4 (L319): AA510742-CA638964
- Range Rover Sport (L320): AA212147-DA768550

NOTE: A limited number of vehicles may have been previously repaired with an old-design AMK
suspension compressor.

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Action: Should a customer express this concern, follow the appropriate Service Instructions (A and B or C) outlined
below.

PARTS:
LR045251

AMK Compressor Replacement Kit

Quantity: 1

TOOLS:
SDD with latest DVD and Calibration File; first available on DVD139.03 v.186
Jaguar Land Rover-approved Midtronics battery power supply

WARRANTY:
NOTE: Repair procedures are under constant review, and therefore times are subject to change; those
quoted here must be taken as guidance only. Always refer to TOPIx to obtain the latest repair time.
NOTE: DDW requires the use of causal part numbers. Labor only claims must show the causal part
number with a quantity of zero.
DESCRIPTION

SRO

TIME
(HOURS)

CONDITION
CODE

CAUSAL PART

Air suspension compressor - Replace
Hitachi with AMK

60.50.89.58

0.6

42

LR023964 (Hitachi);
LR032902 (AMK)

NOTE: Normal Warranty policies and procedures apply.

SERVICE INSTRUCTION A

NOTE: Some variation in the illustrations may occur but the essential information is always correct.

1.

NOTE: Hitachi air suspension compressor (1).

NOTE: Old-design AMK air suspension compressor (2).

NOTE: New-design AMK air suspension compressor (3).

NOTE: Note the difference between the two AMK air suspension compressors.
Identify the air suspension compressor installed on the vehicle:
If a Hitachi air suspension compressor is installed, carry out Service Instruction B.
If an old-design AMK air suspension compressor is installed, carry out Service Instruction C.

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SERVICE INSTRUCTION B
Vehicles with Hitachi air suspension compressor only

WARNING: Steps 1-2 must be carried out within 10 minutes of each other; failure to follow this instruction
may result in personal injury.

1.

CAUTION: Make sure the ignition switch is turned OFF, the Park Brake is ON, and the transmission is
in Park (P) position.
Open the front left door.

2.

WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle
on safety stands.
Raise and support the vehicle; make sure at least one wheel is off the ground.

3. Remove the air suspension compressor lower cover.
Remove the three (3) retaining bolts.
Release the five (5) retaining clips.

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4.

CAUTION: Make sure that the three (3) air
suspension compressor mounting nuts in the
chassis rail are not damaged or corroded. If
required, install the nuts.

CAUTION: Always plug open connections to
prevent contamination.

NOTE: Access to the top compressor retaining
bolt is restricted. It is advisable to use a 3/8"-drive
socket with a flexible coupling.
Remove the air suspension compressor.
Disconnect the three (3) air lines.
Disconnect the two (2) electrical connectors.
Remove the three (3) retaining bolts.

5. Remove and discard the old air suspension compressor upper cover.

6.

CAUTION: Make sure that the cover is
correctly located behind the bracket as shown;
failure to follow this instruction may cause
noise/vibration issues.
Install the new air suspension compressor upper cover.

7.

CAUTION: Make sure the new pipe is installed
securely into the new air suspension compressor

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connector; failure to follow this instruction may cause
damage to the component.

CAUTION: Make sure the in-line connector is
located inside the air suspension compressor box.

NOTE: Old-design AMK air suspension
compressor shown; new-design is similar.
Install the new exhaust pipe to the new air suspension
compressor as shown.

8.

CAUTION: 40mm must be removed from the
pipe; failure to do this could cause a short between
the air suspension compressor and box covers,
resulting in noisy air suspension compressor
operation.

NOTE: The pipe to be cut is the smaller
diameter intake pipe.
Using a suitable pipe cutter tool, cut the air suspension
feed pipe in the position indicated.

9.

CAUTION: Make sure the air line insert is in
the correct orientation; failure to follow this
instruction may cause damage to the component.
Install the air line insert until there is no part of the air
line insert showing and it is flush with the end of the air
line.

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10. Remove and discard the air line and connector from the
valve block.

11.
CAUTION: Do not remove the blanking plug
until after the connector is tightened.
Install the new connector and tighten to 2Nm.
Remove blanking plug.

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12. Install the new air line link pipe.

13. Connect the new air line link pipe.

14.

CAUTION: Make sure the air lines and wiring

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harness are not trapped between the air suspension
compressor mounting bracket and the chassis;
failure to follow this instruction may cause damage
to the vehicle.

CAUTION: Make sure the air line link pipe is
correctly fitted. It must be inserted to a depth of
20mm.

NOTE: Make sure that the air suspension
compressor upper cover is installed correctly.
Secure the air suspension compressor and bracket
assembly.
Tighten the three (3) retaining bolts to 23Nm.

15.
CAUTION: Make sure the air line link pipe is
correctly installed; it must be inserted to a depth
of 20mm.

CAUTION: Make sure the air lines and wiring
are not trapped between the air suspension
compressor mounting bracket and the chassis;
failure to follow this instruction may cause damage
to the vehicle.
Position the new air suspension compressor using the
new mounting bolts (do not tighten the bolts fully) and
install the new air line link pipe.

16.
CAUTION: Make sure the air lines and wiring
harness are not trapped between the air
suspension compressor mounting bracket and the
chassis; failure to follow this instruction may
cause damage to the vehicle.
Check route of wiring harness before fully tightening the
new mounting bolts.

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17.
CAUTION: Do not pre-load the air suspension
compressor mounts.

NOTE: After connection, make sure the inline
connector is located inside the cover in the
positions shown.

NOTE: Air suspension compressor upper cover
shown removed for clarity.
Connect the air line.
After connecting the air line, make sure the connector

is located inside the cover.

18.
CAUTION: Make sure the wiring harness is
not trapped between the air suspension
compressor mounting bracket and the chassis;
failure to follow this instruction may cause damage
to the vehicle.
Make sure the wiring harness is correctly routed.

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19. Connect the air line and the two (2) electrical
connectors.

20. Install the air suspension compressor lower cover.
Secure the five (5) retaining clips.
Tighten the three (3) retaining bolts to 9Nm.

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21.
NOTE: Location of air suspension relay to be
installed.
Install the air suspension compressor relay.
The relay is located in the fuse box in the engine bay.

CAUTION: A Jaguar Land Rover-approved Midtronics battery power supply must be connected to the
vehicle battery during SDD diagnosis / module programming.

CAUTION: Ensure all ignition 'ON' / ignition 'OFF' requests are carried out; failure to perform these steps
may cause damage to control modules in the vehicle.

NOTE: SDD must be loaded with DVD139.03 v.186 or later.

22. Connect the Jaguar Land Rover-approved Midtronics battery power supply to the vehicle battery.
23. Turn ignition 'ON' (engine not running).
24. Connect the Symptom Driven Diagnostics (SDD) system to the vehicle and begin a new session.
25. Follow the on-screen prompts, allowing SDD to read the VIN and identify the vehicle and initiating the data collect

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sequence.
26. Select 'Service Functions' from the Session Type screen.
27. Select 'continue'.
28. From the 'Recommendations' tab, select 'Run' to perform the 'Air suspension - Air suspension compressor
replacement' option.
29. Follow all on-screen instructions to complete this task.
30. Exit the current session.
31. Disconnect the SDD and the battery power supply from the vehicle.

SERVICE INSTRUCTION C
Vehicles with old-design AMK air suspension compressor only

1.

WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle
on safety stands.

WARNING: Make sure that at least one wheel is off the ground.
Raise and support the vehicle.
2. Remove the air suspension compressor lower cover.
Remove the retaining three (3) bolts.
Release the retaining five (5) clips.

3. Disconnect the two (2) air lines.

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4. If installed, remove and discard the air line link pipe.

5. Disconnect the air line and two (2) electrical connectors.

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6.

CAUTION: Make sure that the three (3)
suspension compressor mounting nuts in the
chassis rail are not damaged or corroded. If
required, install the new nuts.

NOTE: New-design AMK air suspension
compressor shown; old-design is similar.
Remove the air suspension compressor and bracket
assembly.
Remove the three (3) retaining bolts.

7. Remove and discard the old suspension compressor upper cover.

8.

CAUTION: Make sure that the cover is
correctly located behind the bracket as shown;
failure to follow this instruction may cause
noise/vibration issues.
Install the new suspension compressor upper cover.

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9.

CAUTION: Make sure the air lines and wiring
harness are not trapped between the air
suspension compressor mounting bracket and the
chassis; failure to follow this instruction may
cause damage to the vehicle.

NOTE: Make sure that the air suspension
compressor upper cover is installed correctly.
Install the air suspension compressor and bracket
assembly.
Tighten the three (3) retaining bolts to 23Nm.

10.
NOTE: Old-design AMK compressor shown;
new-design is similar.

NOTE: Component shown removed from vehicle
for clarity.
Connect the air line.

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Steps 11-12: vehicles with air line link pipe only

11.
CAUTION: Make sure the air line link pipe is
correctly installed; it must be inserted to a depth
of 20mm.
Install the new air line link pipe.

12. Connect the new air line link pipe.

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Steps 13-15: vehicles without air line link pipe only

13. Using a suitable pipe cutter tool, cut the air suspension
feed pipe in the position indicated.
Discard the lower section of the pipe.

14.
CAUTION: Make sure the air line insert is in
the correct orientation; failure to follow this
instruction may cause damage to the component.
Install the air line insert until there is no part of the air

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line insert showing and it is flush with the end of the air
line.

15. Install the new air line link pipe.

16. Connect the air line and two (2) electrical connectors.

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17.
NOTE: Suspension compressor upper cover
shown removed for clarity.
Connect the air line.

18. Install the air suspension compressor lower cover.
Secure the five (5) retaining clips.
Tighten the three (3) retaining bolts to 9Nm.

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19.
NOTE: Location of air suspension relay to be
installed.
Install the air suspension compressor relay.
The relay is located in the fuse box in the engine bay.

CAUTION: A Jaguar Land Rover-approved Midtronics battery power supply must be connected to the
vehicle battery during SDD diagnosis / module programming.

CAUTION: Ensure all ignition 'ON' / ignition 'OFF' requests are carried out; failure to perform these steps
may cause damage to control modules in the vehicle.

NOTE: SDD must be loaded with DVD139.03 v.186 or later.

20. Connect the Jaguar Land Rover-approved Midtronics battery power supply to the vehicle battery.
21. Turn ignition 'ON' (engine not running).
22. Connect the Symptom Driven Diagnostics (SDD) system to the vehicle and begin a new session.
23. Follow the on-screen prompts, allowing SDD to read the VIN and identify the vehicle and initiating the data collect

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sequence.
24. Select 'Service Functions' from the Session Type screen.
25. Select 'continue'.
26. From the 'Recommendations' tab, select 'Run' to perform the 'Air suspension - Air suspension compressor
replacement' option.
27. Follow all on-screen instructions to complete this task.
28. Exit the current session.
29. Disconnect the SDD and the battery power supply from the vehicle.

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