NHTSA ID Number: 11003604
Manufacturer Communication Number: T-SB-0088-23
TSB/Document Date: 2024-07-06
Summary
Some 2020 – 2024 model year Corolla vehicles may exhibit a vibration or rattle noise from the right-hand engine mounting insulator sub-assembly. This condition will usually go away when the engine Revolutions Per Minute (RPM) are above idle. This condition is typically found on vehicles in warm climates/weather. No Diagnostic Trouble Codes (DTCs) are associated with this condition. REVISION NOTICE April 01, 2024 Rev1: •The Warranty Information section has been updated
T-SB-0088-23
Rev1
November 10, 2023
Vibration or Rattle Noise From Right-hand Engine
Mount
Service
Category
Engine/Hybrid
System
Section
Engine Mechanical
Market USA and
Mexico
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2020 - 2024
Corolla
VDS(s): B4MCE, B4MDE, B4MEE, M4MCE,
M4RCE, P4MCE, P4RCE, S4MCE, S4RCE,
T4MCE, T4RCE
Engine(s): M20
REVISION NOTICE
April 01, 2024 Rev1:
The Warranty Information section has been updated.
Any previous printed versions of this bulletin should be discarded.
Introduction
Some 2020 – 2024 model year Corolla vehicles may exhibit a vibration or rattle noise from the
right-hand engine mounting insulator sub-assembly. This condition will usually go away when the
engine Revolutions Per Minute (RPM) are above idle. This condition is typically found on vehicles
in warm climates/weather. No Diagnostic Trouble Codes (DTCs) are associated with this condition.
Follow the Repair Procedure in this bulletin to improve this condition.
Table of Contents
Warranty Information............................................................................................................... 2
For USA Market ................................................................................................................. 2
For Mexico Market ............................................................................................................. 2
Parts Information..................................................................................................................... 2
Repair Procedure .................................................................................................................... 3
© 2024 Toyota Motor Sales, USA
Page 1 of 3
T-SB-0088-23
Rev1
November 10, 2023
Page 2 of 3
Vibration or Rattle Noise From Right-hand Engine Mount
Warranty Information
For USA Market
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EG2305
R & R the RH Engine Mount
0.7
12305-#####*
9B
14
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired
by searching for the parts in the Electronic Parts Catalog using the VIN filter.
APPLICABLE WARRANTY
This repair is covered under the Toyota Powertrain Warranty. This warranty is in effect for
60 months or 60,000 miles, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
For Mexico Market
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EG2305
R & R the RH Engine Mount
0.7
12305-#####*
9B
14
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired
by searching for the parts in the Electronic Parts Catalog using the VIN filter.
APPLICABLE WARRANTY
This repair is covered under the Toyota Basic Warranty. This warranty is in effect for
36 months or 60,000 kilometers, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
Parts Information
PART NUMBER
PREVIOUS
NEW
12305-F2010
12305-24110
PART NAME
QTY
Insulator Sub-assy, Engine Mounting, RH
1
© 2024 Toyota Motor Sales, USA
T-SB-0088-23
Rev1
November 10, 2023
Page 3 of 3
Vibration or Rattle Noise From Right-hand Engine Mount
Repair Procedure
1. Confirm the condition exists.
Does the vehicle exhibit a vibration or rattle noise from the right-hand engine mounting
insulator sub-assembly that usually goes away when the engine RPM are above idle?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis following the applicable
Repair Manual.
2. Locate the right-hand engine mounting insulator sub-assembly.
Figure 1.
1
2
1
Location of the Right-hand Engine Mounting Insulator Sub-assembly
2
Right-Hand Engine Mounting Insulator Sub-assembly
3. Remove the right-hand engine mounting insulator sub-assembly.
Refer to TIS, applicable model and model year Repair Manual:
2020 – 2021 / 2022 / 2023 – 2024 Corolla:
Engine / Hybrid System – M20A-FKS (Engine Control) –
Camshaft Timing Control Motor – Removal
4. Install the NEW right-hand engine mounting insulator sub-assembly with the part number
provided in the Parts Information table.
Refer to TIS, applicable model and model year Repair Manual:
2020 – 2021 / 2022 / 2023 – 2024 Corolla:
Engine / Hybrid System – M20A-FKS (Engine Control) –
Camshaft Timing Control Motor – Installation
5. Confirm the condition has improved.
© 2024 Toyota Motor Sales, USA
- 6X better wear protection on critical engine parts than...
- 1.3X better sludge protection than industry standards*
- 3X Stronger against viscosity breakdown than leading full...
- Protection for 10,000 miles between oil changes
- Meets or exceeds the following specifications: API SP/SN...
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TSB/Document ID: T-SB-0088-23
Replacement Service Bulletin Number:
MFR Communication Date: 2024-04-01
MFR Internal Campaign ID/Software Version: T-SB-0088-23
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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