@TOYOTA
T-SB-0081 -1 4

Tech nical Service Bulletin

August 11, 2014

Tire Pressure Warning System (TPWS) Activation
Service
Category

General

Section

Pre-Delivery Service

Market

Toyota Supports ~
ASE Certification~

USA

Appl icability
YEAR(S)

MODEL(S)

2015

4Runner

ADDITIONAL INFORMATION

Introduction
201 5 model year 4Runner vehicles are equipped with a direct-type Tire Pressure Warning System
(TPWS). Each tire (including the spare tire*) has a tire pressure warning valve/sensor, and the
measured tire pressure data is transmitted to the Tire Pressure Warning System antenna/receiver to
the Tire Pressure Warning System EC U.
During Pre-Delivery Service (PDS) , the tire pressure warn ing valves/sensors must be activated
according to the procedure in this bulletin .
• Limited grade only

Required Tools & Equipment
REQUIRED EQUIPMENT

SUPPLIER

PART NUMBER

Techstream 2. 0*
Techstream Lite

QTY

TS2UNIT
ADE

1

T SLITEPDLR01

• Essential SST.

NOTE
• Only ONE of the Techstream units listed above is required.
• Software version 9.10.037 or later is required .
• Additional Techstream units may be ordered by calling Approved Dealer Eq uipment (ADE) at
1-800-368-6787.

Warranty Information
OP CODE

DESCRIPTION

TIME

OFP

T1

T2

N/A

Not Applicable to Warranty

-

-

-

-

© 2014 Toyota Motor Sales, USA

Page 1 of 3

@TOYOTA

T-SB-0081 -14

August 11, 2014

Page 2 of 3

Tire Pressure Warning System (TPWS) Activation

Reference

• After cycling the ignition to the "IG-ON"
position , the Low Tire Pressure Warning
Light will blink for 1 minute and remain
illuminated until all the tire pressure warning
valves/sensors are activated.

Figure 1.

• The Diagnostic Trouble Codes (OTCs) listed
below may be stored in the TPWS ECU until
the tire pressure warning valves/sensors
are activated.
• The DTCs will automatically clear when
the tire pressure warning valves/sensors
are activated .

OTC NO.

•1

OTC NO.

I

1

Low T i re Pressure Warn ing Light

OTC

•2

11

C21 11

Transmitter 101 Operation Stop

12

C2112

Transmitter 102 Operation Stop

13

C2113

Transmitter 103 Operation Stop

14

C2114

Transmitter 104 Operation Stop

15 *3

C2115 *3

Transmitter 105 Operation Stop

OTC No. indicated by blinking of the Low Tire Pressure Wa rning Light.

•1

•2: OTC No. indicated on Techstream.
' 3.

For the spare ti re of Limited grade only.

Activation Procedure

1. Connect Techstream .
2. Cycle the ignition switch to the "IG-ON"
position and check that the Low Tire Pressure
Warning Light blinks for 1 minute and then
remains illuminated.

Figure 2.

1

© 2014 Toyota Motor Sales, USA

I

L ow T ire Pressure Warning Light

@TOYOTA

T-SB-0081 -14

August 11 , 2014

Page 3 of 3

Tire Pressu re Warning System (TPWS) Activation

Activation Proced u re (Continued)

3. Press or remove the valve core to reduce the tire
inflation pressure rapidly by 6 psi (0.4 kgf/cm2,
40 kPa) , or more , within 30 seconds.

Figure 3.
~--------------~

If the tire inflation pressure is NOT reduced
by 6 psi (0.4 kgf/cm2, 40 kPa) , or more,
within 30 seconds, the tire pressure warning
valves/sensors will NOT be activated.
NOTE

This operation is required for the system to be
activated and must be performed for each tire
(including the spare tire*), one at a time.
1

I

Core

4. Using Techstream, check for TPWS DTCs.
• If NO DTCs are stored , go to step 5.
• If DTCs C21 11 - C2 11 5 are stored , repeat step 3.
• If any other DTCs are stored , refer to the Repair Manual.
5. Adjust all tires (includi ng the spa re tire*)
to the standa rd tire inflation pressure as
indicated on the Tire and Loading Information
label located inside the driver's door jamb.

Figure 4.

NOTE

To adjust the tire pressure correctly when the
outside temperature is s ignificantly colder
than shop temperature, perform a Health
Check using Techstream and select the
" Compensation Tire Pressure" checkbox.
Compensation pressures will be displayed on
the Health Check results screen. Adjust the
tire pressure when the tires are cold.

1

I

Tire an d Loading Info rmation Label

6. Confirm that the Low Tire Pressure Warn ing Light is OFF.
• Limited grade only.

© 2014 Toyota Motor Sales. USA