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TECHNICAL BULLETIN
LTB00352NAS6
19 MAY 2015
© 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.
Changes are highlighted in gray

SECTION: 303-03

Coolant Pump Diagnostics
AFFECTED VEHICLE RANGE:
LR4 (LA)
Model Year: 2010-2015
VIN:
AA510178-FA745526
Range Rover Sport (LW)
Model Year: 2014-2015
VIN:
EA300000-FA509159
Range Rover (LG)
Model Year: 2013-2015
VIN:
DA001204-FA201814
Range Rover Sport (LS)
Model Year: 2010-2013
VIN:
AA212147-DA814822
Range Rover (LM)
Model Year: 2010-2012
VIN:
AA304426-CA393639

MARKETS:
NAS

CONDITION SUMMARY:
Situation: The fluid level in the engine coolant system expansion tank may fall below the minimum level over
a period of time or a ‘Low coolant level’ message is displayed in the message center. Upon inspection, a leak
may be found to be from the front of the engine-driven coolant pump, together with excessive wear of the
coolant pump bearing.

NOTE: the coolant pump can display some dry coolant residue on the pump body and
surrounding area during normal operation. A small amount of coolant may temporarily weep
through the pump seals or from the evaporation chamber. This does not affect the operation of the
pump or the cooling system and does not damage the coolant pump. A small amount of dry coolant
residue on the pump body, pulleys, belts, or around the front of the engine is not alone sufficient
justification for changing a coolant pump.
Cause: This may be caused by coolant ingress into the coolant pump bearing housing, leading to one or more
of the following:
• corrosion of the bearing;

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• incorrect support for the impeller shaft;
• accelerated wear of the mechanical flat face of the seal; and
• coolant loss sufficient to display the warning message.
Action: Should a customer express this concern, follow the Service Instruction outlined below.

PARTS:
No Parts Required

TOOLS:
Refer to Workshop Manual for any required special tools.

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

Coolant pump bearing diagnostics - LR4
(L319)

26.50.89.27

0.3

42

LR055239

Coolant pump bearing diagnostics - Range
26.50.89.27
Rover Sport (L494)

0.3

42

LR055239

Coolant pump bearing diagnostics - Range
26.50.89.27
Rover Sport (L320)

0.4

42

LR055239

Coolant pump bearing diagnostics - Range
26.50.89.27
Rover (L322, L405)

0.3

42

LR055239

0.2

42

LR055239

Coolant pressure test - All

26.10.07

NOTE: Normal Warranty procedures apply.

SERVICE INSTRUCTION:
Updates to the Service Instruction have not been highlighted.
NOTE: check the parts catalog to make sure the repair is made at the correct level. Coolant pump,
cooling system gaskets, and seals are available through the parts catalog. These parts should be used
whenever possible rather than fitting complete assemblies.
NOTE: in all cases, reference this Technical Bulletin in the technician comments on the Warranty
claim and on the Parts return tag (if applicable). Parts may be subject to investigation.

1. Check the coolant expansion tank level and message centre for a low coolant warning and record on the
repair order. With the engine cold, top up the coolant as required to the maximum level in the coolant
expansion tank, record the quantity of coolant required to top up the expansion tank to maximum level on
the repair order.

2. The current step will specify what to do next depending on where the VIN of the current vehicle falls within
the following bearing seal introduction VINs list below.
• If the vehicle was manufactured before the bearing seal introduction VIN in the table below, a new
pump should only be installed if the pump shows clear signs of leakage, and Steps 4-6 have been
carried out. Install the coolant pump (see TOPIx Workshop Manual section 303-03). Do not continue
with the rest of this Service Instruction.

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• If the vehicle was manufactured after the bearing seal introduction VIN in the table below, then go to
the next step of this Service Instruction.
3.0L SC V6
MODEL CODE

MODEL NAME (engine)

BEARING SEAL INTRODUCTION VIN

LA - L319

LR4 (V6)

EA680828

LG - L405

Range Rover (V6)

EA110440

LW - L494

Range Rover Sport (V6)

EA000011

5.0L NA / SC V8
MODEL CODE

MODEL NAME (engine)

BEARING SEAL INTRODUCTION VIN

LA - L319

LR4 (V8)

CA618233

LW - L494

Range Rover Sport (V8)

EA000002

LG - L405

Range Rover (V8)

DA000010

LS - L320

Range Rover Sport (V8)

CA742657

LM - L322

Range Rover (V8)

CA376755

3. On the current coolant pump there may be some signs of leakage, such as dry coolant residue, but this is
not a reason to replace the coolant pump. It is necessary to check the coolant pump for an abnormal noise
from the bearings, free play in the pulley, or a grinding/rumbling feel when rotating the pulley by hand see
Steps 7-9.

4. If there is low coolant in the expansion tank and or a low coolant message from the message centre,
continue with the next step of this Service Instruction to identify the source of the leak. If a leak is located
this must be claimed as a separate Warranty Claim.

5.

NOTE: A 1-1.5 PSI pressure drop is normal and does not indicate a system leak. An air leak
may also be present in the pressure test equipment.
Carry out a cooling system pressure test to 1 bar (15 PSI) for 5 minutes. Record the pressure drop on the
repair order.

6. If there is a cooling system pressure drop of more than 1.5 PSI, then investigate the system for fresh (wet)
leaks and record on the repair order. A UV light may be helpful as there is UV dye in the coolant. If there is
fresh coolant dripping from the pump - this indicates a leak.

Coolant Pump Bearing Check Procedure:

7. Slacken the primary drive belt tensioner and move the primary drive belt to one side.

8. Hold the coolant pump pulley firmly and rock it up and down by hand.
• Feel for excessive play.
• Rotate the pulley a ¼ turn and repeat the check. Do this check twice more.
• Record the results on the repair order.
9. Spin the pulley and feel for roughness and record the results on the repair order. Check for free play on the
coolant pump pulley shaft and record the results on the repair order.

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10. The coolant pump should only be replaced where there are signs of free-play, excessive noise, or
grinding/rumbling in the bearing (see TOPIx Workshop Manual section 303-03). Make sure that any repair is
completed at the lowest possible component level - for example replacing gaskets and seals where
appropriate rather than higher level assemblies.

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