TECHNICAL BULLETIN
LTB00502NAS1
12-DEC-12
SECTION: 303-01B

Continual Unexplained Low Engine Coolant Level
AFFECTED VEHICLE RANGE:
LR2 (LF)

VIN:
Model Year:

DH281046-Onwards
2013-Onwards

Range Rover Evoque (LV)

VIN:
Model Year:

CH000447-Onwards
2012-Onwards

CONDITION SUMMARY:
Situation: A continual unexplained low engine coolant level may be evident, with no leak evident from the
engine coolant system.
Cause: This may be caused by coolant loss through the threaded core plugs in the engine cylinder head.
Action: In the event of a customer concern of the above, refer to the Repair Procedure outlined below.

PARTS:
STC50552 ............... Loctite 243
LR025306 ................ Oil Filter
LR025048 ................ Oil Drain Plug
LRN2279 ................. Coolant 1L

Qty: 1
Qty: 1
Qty: 1
Qty: 2

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 DDW to obtain the latest repair
time.
DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a
quantity of zero.
SRO

DESCRIPTION
Re-seal core plug(s)

26.35.89/28

TIME
(HOURS)
2.30

CONDITION
CODE
51

CAUSAL
PART
LR025389

Normal Warranty policies and procedures apply

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.
© Jaguar Land Rover North America, LLC

555 MacArthur Boulevard

Mahwah, NJ 07430

REPAIR PROCEDURE
NOTE: This procedure should only be carried out after a thorough inspection has shown no other
causes of coolant loss. For further information refer to TOPIx Workshop Manual, section 303-03B Engine
Cooling - GTDi 2.0L Petrol - Engine Cooling Diagnosis and Testing.
1. Refer to Workshop Manual section 303-01B and remove the
valve cover.
2. Using a suitable coolant system pressure tester, pressurize
the coolant system.
3.

NOTE: Do not remove the core plug(s) at this stage.
Inspect both core plugs for signs of coolant leakage and/or
congealed oil.

4. Inspect the core plugs for signs of coolant leakage.
• If signs of coolant leakage are evident, carry on to step 6.
• If signs of congealed oil and coolant leakage are evident,
carry on to step 6.

5.

NOTE: Fresh engine oil may be evident due to
spillage when the valve cover is removed.
Inspect the core plugs for signs of coolant leakage.
• If signs of congealed oil are evident, carry on to step 6.
• If no signs of congealed oil or coolant leakage are evident,
carry on to step 13.

6. De-pressurize the coolant system.
7. Refer to Workshop Manual, section 303-03B and carry out a
coolant system partial drain.
8. Using a suitable cleaning fluid and cloth, clean any excess oil
and/or coolant from around the core plugs and the spark
plugs.
9.

NOTE: The core plug can be re-used if no signs of
damage are evident.
Reseal the leaking core plug.
a) Remove the core plug.
b) Clean and dry both threads.
c) Inspect the threads for signs of damage.
d) Apply a continuous bead of Loctite 243 to the core plug
thread.
e) Install the core plug and tighten to 75 Nm.
f) If required, repeat steps a-e to the other core plug.

10.

WARNING: Do not start the engine.
Refer to Workshop Manual section 303-03B and carry out
steps 2-4 of the coolant filling procedure to fill the engine with
coolant.

11.

CAUTION: Allow the Loctite 243 to cure for at least
one (1) hour before pressurizing the coolant system.
Using a suitable coolant system pressure tester, pressurize
the coolant system.

12. Inspect both core plugs for signs of coolant leakage.
• If there are signs of coolant leakage from the core plug(s),
carry out the necessary rectification procedure.
• If there are no signs of coolant leakage from the core
plug(s), carry on to step 13.

13. De-pressurize the coolant system and remove the coolant
system pressure tester.
14.

NOTE: Make sure that the area around the core plugs
and spark plugs is clean and free from coolant, oil and
debris.
15. Refer to Workshop Manual section 303-01B and install the
valve cover.
16.

NOTE: Only carry out this step if the coolant has been
drained previously.
NOTE: Do not install the engine undershield until
after the engine oil and filter has been renewed.
Refer to Workshop Manual section 303-03B and carry out
steps 5-13 of the coolant filling procedure.

17.

NOTE: Only carry out this step if the core plug(s)
required re-sealing.
Refer to Workshop Manual, section 303-01B and renew the
engine oil and filter.