T-TT-0589-19

Service Bulletin Details

Public Details for: T-TT-0589-19

Tt: customers may complain of a whine noise upon starter engagement. ? The whine noise may be accentuated when holding the key to start the engine; alternately, the noise may be diminished by using the crank hold function ?Bumping? The key

- 2020 -

Models from 2020

2020 TOYOTA SEQUOIA

2020 TOYOTA TUNDRA

Tech Tip T-TT-0589-19
Subject
December 06, 2019
Market
Whine Noise Upon Starter Engagement
Service Category
Section
Engine/Hybrid System
Starting
USA
Applicability
20MY Tundra, Sequoia
APPLICABLE VEHICLES
2020
Tundra
2020
Sequoia
CONDITION



Customers may complain of a whine noise upon starter engagement.
The whine noise may be accentuated when holding the key to start the engine; Alternately, the noise may be
diminished by using the crank hold function “bumping” the key to start the engine.
The whine noise is likely to be loudest at the first cold start, diminishing with subsequent starts.
RECOMMENDATIONS
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


Confirm a whine noise upon starter engagement.
Locate the engine serial number on the driver’s side cylinder head cover as shown in figures 1 and 2.
Create a TAS case, noting the engine serial number.
For weekend or holiday cases, contact TAS at the next opportunity.
Figure 1: Engine serial number location – Zoom out
Figure 2: Engine serial number location – Zoom in
LINK REFERENCES
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Expires on
Ver. 2.11 08/11/2019 T
12/06/2020
© 2019, Toyota Motor Sales, USA
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