Service Bulletin
July 7, 2025

22-009
Version 3

Warranty Extension: Engine Does Not Auto Restart After Entering Auto
Idle Stop
Supersedes Version 2, dated April 9, 2022, to revise the information highlighted in yellow.
AFFECTED VEHICLES
Year

Model

Trim Level

VIN Range

2015–20

TLX

V6 (SH-AWD)

Check the iN VIN status for eligibility

REVISION SUMMARY
•
•

Under BACKGROUND, information was added.
Under INSPECTION PROCEDURE, information was removed.

BACKGROUND
Under certain circumstances, after coming to a stop and engaging idle stop the vehicle may not restart automatically due to
excessive cylinder pressure and/or low cranking torque. Typically, the client can immediately restart the vehicle by selecting
Park and pressing the ENGINE START/STOP button.
NOTE: If 22-008 Product Update: 2015-20 TLX PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI
software must be updated first before the warranty extension applies.
Acura is extending the warranty coverage for valve adjustment and starter replacement related to this condition to 10 years
from the original date of purchase with no mileage limitation.
Acura is also implementing an additional (1) twenty-four (24) month period for 2015 model year Acura TLX vehicles,
commencing at the expiration of the 10 year warranty extension period for each vehicle, and (2) eighteen (18) month
period for 2016 model year Acura TLX vehicles, commencing at the expiration of the 10 year warranty extension period for
each vehicle, for valve adjustment and starter replacement related to this condition under warranty.
CLIENT NOTIFICATON
Owners of the affected vehicles will be sent a notification of this campaign.
Do an iN VIN status inquiry to make sure the vehicle is shown as eligible.
CORRECTIVE ACTION
Replace the starter assembly, stater relays and adjust the valves.

CLIENT INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, eq uipment, 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 ap plies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an authorized
Acura automobile dealer.

© 2025 American Honda Motor Co., Inc. – All Rights Reserved

Page 1 of 11

PARTS INFORMATION
Part Name

Part Number

Quantity

Starter Motor Assy

31200-5J2-A53

1

Relay Assy, Power

39794-T5A-J01

2

Bolt, Flange

90051-5J4-000

1

Gasket Throttle Body

16176-RYE-A10

1

Gasket, Intake Manif old Cover

17112-5G0-A01

1

Gasket, Intake Manif old

17105-R9P-A01

1

NOTE: If 22-008 Product Update: 2015-20 TLX PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI
software must be updated first before the warranty extension applies. Any Warranty Extension claims submitted prior to an
approved Product Update will be debited.
REQUIRED MATERIALS
Part Name

Part Number

Quantity

Hondabond (one tube repairs 4 vehicles)

08718-0004

1

Tool Name

Tool Number

Quantity

Relay Puller

07AAC-000A2A1

1

TOOL INFORMATION

WARRANTY CLAIM INFORMATION
Operation
Number

Description

Flat Rate
Time

Defect
Code

Symptom
Code

Template
ID

Failed Part Number

1181FF

Replace the Starter,
Starter Relays and
Adjust Valves

2.8 hr

6T600

GC900

B22009A

31200-5J2-A52

Skill Level: Repair Technician
INSPECTION PROCEDURE
Does 22-008 Product Update: 2015-20 TLX PGM-FI Idle Stop Software Update apply to the VIN?
Yes – Confirm 22-008 Product Update: 2015-20 TLX PGM-FI Idle Stop Software Update is closed by checking VIN inquiry.
• If closed, proceed to the repair procedure.
• If open, perform 22-008 Product Update: 2015-20 TLX PGM-FI Idle Stop Software Update. Repair is complete.
No – Proceed to the repair procedure.

Page 2 of 11

REPAIR PROCEDURE
Starter Removal and installation.
1. Disconnect the 12 volt battery.
2. Remove the 12 volt battery setting plate and the 12 volt battery.

3. Disconnect the connector from the air cleaner, then remove the harness clamps and remove the air cleaner assembly.

4. Remove the harness holder from the starter.

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5. Disconnect the positive starter cable and the connector, then remove the starter.

6. Reinstall the parts in the reverse order of removal.
7. Replace start cut relay 1 and starter cut relay 2.
8. Connect the HDS to the DLC.
9. Turn the vehicle to the ON mode.
10. Make sure the HDS communicates with the vehicle, then select Idle Stop Starter Counter Clear in the ADJUSTMENT
MENU with the HDS.

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Valve Clearance Adjustment
1. Disconnecting the breather pipe and remove the intake air duct.

2. Disconnect the connectors and EVAP purge hose. Remove the throttle body without disconnecting the water bypass
hoses.

Page 5 of 11

3. Disconnect the PCV hose and the brake booster vacuum hose.

4. Remove the upper cover mounting bolts and nuts sequentially in three steps. Remove the upper cover.

5. Remove the intake manifold mounting bolts and nuts sequentially in three steps. Remove the intake manifold.

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6. Remove the ignition coils, positive alternator cable, and harness holders on both cylinder heads.
7. Remove cylinder head covers.
NOTE: Connect the HDS to the DLC and monitor ECT SENSOR 1. When the engine has cooled down and the coolant
temperature is less than 100°F (38°C), adjust the valve clearance.
8. Set the No. 1 piston at top dead center (TDC). Align the pointer on the front upper cover with the No. 1 piston TDC mark
on the front camshaft pulley.

9. Select the correct feeler gauge for the valve clearance you are going to check. Valve Clearance Spec:
•
•

Intake: 0.20－0.24 mm (0.008－0.009 in)
Exhaust: 0.28－0.32 mm (0.011－0.012 in)

For this repair, you will set the valve clearance to these specs:
• Intake .22 mm
• Exhaust .30 mm

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10. Insert the feeler gauge between the adjusting screw and the end of the valve stem on the No. 1 cylinder and slide it back
and forth; you should feel a slight amount of drag.

11. If you feel too much or too little drag, loosen the locknut, then turn the adjusting screw until the drag on the feeler gauge
is correct.
12. While holding the adjusting screw with the screwdriver, tighten the locknut, then recheck the clearance. Repeat the
adjustment, if necessary.
Specified Torque:
Intake: 20 N·m (15 lbf·ft)
Exhaust: 20 N·m (15 lbf·ft)
Apply new engine oil to the nut threads.

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13. Rotate the crankshaft clockwise. Align the pointer on the front upper cover with the No. 4 piston TDC mark on the
front camshaft pulley.
14. Check, and if necessary, adjust the valve clearance on the No. 4 cylinder.

15. Rotate the crankshaft clockwise. Align the pointer on the front upper cover with the No. 2 piston TDC mark on the front
camshaft pulley.
16. Check, and if necessary, adjust the valve clearance on the No. 2 cylinder.

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17. Rotate the crankshaft clockwise. Align the pointer on the front upper cover with the No. 5 piston TDC mark on the front
camshaft pulley.
18. Check, and if necessary, adjust the valve clearance on the No. 5 cylinder.

19. Rotate the crankshaft clockwise. Align the pointer on the front upper cover with the No. 3 piston TDC mark on the front
camshaft pulley.
20. Check, and if necessary, adjust the valve clearance on the No. 3 cylinder.

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21. Rotate the crankshaft clockwise. Align the pointer on the front upper cover with the No. 6 piston TDC mark on the front
camshaft pulley.
22. Check, and if necessary, adjust the valve clearance on the No. 6 cylinder.

23. Check the spark plug seals for damage. If any seals are damaged, replace them.
24. Thoroughly clean the head cover gasket and the groove of the cylinder head cover.
NOTE: Check and if necessary, replace the head cover gasket.
25. Install the head cover gasket in the groove of the cylinder head cover. Make sure the head cover gasket is seated
securely.
26. Apply liquid gasket to the front and rear rocker arm oil control valve mating surfaces.

27. Set the spark plug seals on the spark plug tubes and install the front and rear cylinder head cover.
28. Inspect the spark plug seals for damage.
29. Tighten the bolts in three steps, in the final step torque the bolts, in sequence, 12 N·m (9 lbf·ft).
30. Reinstall the remaining parts in the reverse order.
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