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SI B11 03 16
Engine

April 2016
Technical Service

SUBJECT

N63R DME Fault Code 20A508 Turbocharger Coolant Pump Blocked
MODEL

G12 (7 Series)
With N63TU2 (also known as the N63R engine) and built up to 11/11/2015
SITUATION

A Check Control message is active for “Drive Faulty”.
The following fault code is stored in the DME:
- 20A508 - Engine cooler system: Shut down turbocharger coolant pump due to blockage
CAUSE

Auxiliary coolant pump for the turbocharger becomes blocked as a result of its failure.
CORRECTION

A. If the fault frequency counter is two or less:
- Replace the auxiliary coolant pump for the turbochargers.
Or:
B. If the fault frequency counter is three and higher:
- Replace the auxiliary coolant pump for the turbochargers; and
- Replace both turbochargers; and
- Replace the oil lines (supply and return) for the turbochargers.
PROCEDURE

Replace the auxiliary coolant pump – Refer to Repair Instruction 11 53 090 Removing and
installing/replacing auxiliary water pump for exhaust turbocharger.
Replace both turbochargers and oil lines (supply and return) - Refer to Repair Instructions 11 64
025 Remove and install/replace right exhaust turbocharger and 11 64 030 Remove and
install/replace left exhaust turbocharger.
PARTS INFORMATION

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Part Number

Description

Quantity

11 51 8 623 759

Coolant pump, electric

1

11 65 8 616 917

Turbocharger

2

18 30 7 553 601

Gasket

2

11 65 7 620 508

Clamp

2

11 62 8 600 289

Gasket

2

11 65 7 620 507

Clamp

2

11 42 8 600 293

Oil supply line 1-4

1

11 42 8 600 536

Oil supply line 5-8

1

07 11 9 963 072

Gasket rings

4

11 42 7 844 986

Oil return line 1-4

1

11 42 7 844 987

Oil return line 5-8

1

11 42 8 624 158

Gasket

2

11 42 7 578 079

O-ring

2

Bulk Materials - Sublet:
Part Number

Description

Quantity

83 21 2 365 950

Motor Oil SAE 0W-30
Longlife (1 liter)

1

82 14 1 467 704

Antifreeze/Coolant (1
gallon)

Up to 1.3

Antifreeze/Coolant (1
Quart)

Up to 5.2

Or:
82 14 2 209 769

1.3 gallons of Antifreeze/Coolant provides 2.6 gallons/5.2 quarts provides 10.4 quarts when mixed
with water to create 50/50 mixture.
WARRANTY INFORMATION

Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light
Trucks or the BMW Certified Pre-Owned Program.
Defect Code:

17 61 00 12 00

Correction Repair “A”
Labor Operation:

Labor Allowance:

Description:

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11 53 090

Refer to KSD

Replace the auxiliary coolant pump for
turbocharger

If you are using a Main labor code for another repair, use the Plus code labor operation 11 53 590
instead.
Or:
Correction Repair “B”
Labor Operation:

Labor Allowance:

Description:

11 42 350

Refer to KSD

Remove and install/replace both oil
feed lines (includes removal of the
turbochargers)

15 FRU

Work time to replace the auxiliary
coolant pump for turbochargers (in
conjunction with the removal of both
oil feed lines and the turbochargers)

And:

00 50 000

If you are using a Main labor code for another repair, use the Plus code labor operation 11 42 720
instead.
Work time labor operation code 00 50 000 is not considered a Main labor operation. Also, since the
“work time” FRU allowance to be claimed is specified, a separate punch time is not required.
And:
Sublet – Bulk Materials

Sublet Code 4

Reimbursement for the repair-related
See sublet reimbursement bulk materials (BMW part numbers,
calculation below
please do not use the part numbers for
claim submission)

Sublet reimbursement calculation for claiming the “used quantities” of repair-related bulk materials
(BMW part numbers) is at dealer net plus your center’s handling.
Enter this material cost in sublet and itemize the amount on the repair order and in claim comment
section.
Overlapping Labor – Other Repairs
If invoicing KSD2 flat rate labor operation codes for other repair work results in overlapping labor,

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invoice work time labor operation 00 50 000 for the additional time (FRU) minus the overlap
instead.
Work time labor operation code 00 50 000 is not considered a Main labor operation.
Eligible other repair work that will be claimed under a difference defect code do require separate
punch times.
On the repair order and in the claim comment section, please identify the labor operations labor
operation code 00 50 000 replaces and itemize the claimed FRU amount.
[ Copyright ©2016 BMW of North America, Inc. ]

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