1998 Toyota Sienna Service and Repair Manual

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Factory-Grade Data

1998 Toyota Sienna service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications, torque values, and reference data
  • Electrical diagnostics with full wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
  • Diagnostic trouble codes and troubleshooting flow
  • Maintenance schedules and fluid capacities

Trims covered

  • CE
  • LE
  • XLE

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Maintenance & Lubrication
  • Specifications
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Diagnostic Trouble Codes
  • Technical Service Bulletins
  • Wiring Diagrams

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Vehicle Safety Data

1998 Toyota Sienna Recalls & Complaints

NHTSA #10V16000020/04/2010Component: STRUCTURE

TOYOTA IS RECALLING CERTAIN MODEL YEAR 1998 THROUGH 2010 SIENNA PASSENGER VEHICLES MANUFACTURED BETWEEN AUGUST 7, 1997 AND JANUARY 4, 2010, CURRENTLY REGISTERED IN OR ORIGINALLY SOLD IN CONNECTICUT, D

Consequence

THE CABLE MAY BREAK DUE TO EXCESSIVE CORROSION AND THE SPARE TIRE MAY SEPARATE FROM THE VEHICLE, POS

Remedy

TOYOTA WILL NOTIFY OWNERS WITH AN INTERIM LETTER INITIALLY INSTRUCTING THEM TO BRING THEIR VEHICLE T

TSB #10251070

OBSOLETE NOTICE January 22, 2024: This bulletin is now obsolete. Please see T-SB-0057-18.

TSB #10244113

TSB: Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN plates (the metal plate riveted to dashboard) (see Figure 1) for most 1979 ? 2023 model year vehicles may be available provided the re

TSB #10214323

TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions

TSB #10207946

POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Toyota. This information must be kept near the point of vehicle sale and be available to any custom

TSB #10197473

Product general information.

TSB #10197476

Replacement vin plates.

TSB #10190453

TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.

TSB #10190460

Toyota Safety Recall and Service Campaign - Technician Certification Requirements

Showing the 8 most recent of 92 technical service bulletins on file with NHTSA.

20041112Component: AIR BAGSCrash reported3 injured

WE WERE IN AN AUTOMOBILE ACCIDENT RECENTLY AND HAVE A QUESTION ABOUT NEEDING TO REPLACE THE SEAT BELTS AND POSSIBLY QUESTION OF MALFUNCTION OF AIRBAGS. OUR TOYOTA SIENNA VAN WAS GOING ABOUT 35 MPH AN

20041112Component: SEAT BELTSCrash reported3 injured

WE WERE IN AN AUTOMOBILE ACCIDENT RECENTLY AND HAVE A QUESTION ABOUT NEEDING TO REPLACE THE SEAT BELTS AND POSSIBLY QUESTION OF MALFUNCTION OF AIRBAGS. OUR TOYOTA SIENNA VAN WAS GOING ABOUT 35 MPH AN

20120120Component: SEAT BELTSCrash reported2 injured

DRIVER IN WRONG LANE HIT MY VAN, WITH MOST OF IMPACT ON RIGHT FRONT SIDE OF VAN. BOTH VEHICLES WERE TOTALLED IN COLLISION. RIGHT FRONT PASSENGER SEAT BELT INITIALLY HELD, BUT RELEASED DURING COLLISIO

20120120Component: AIR BAGSCrash reported2 injured

DRIVER IN WRONG LANE HIT MY VAN, WITH MOST OF IMPACT ON RIGHT FRONT SIDE OF VAN. BOTH VEHICLES WERE TOTALLED IN COLLISION. RIGHT FRONT PASSENGER SEAT BELT INITIALLY HELD, BUT RELEASED DURING COLLISIO

20171102Component: AIR BAGSCrash reported1 injured

AIR BAGS DID NOT DEPLOY IN A FRONT END COLLISION. WE WERE TRAVELING AT ABOUT 65MPH ON THE INTERSTATE WHEN ANOTHER VEHICLE LOST CONTROL, WRECKED, AND CAME TO A COMPLETE STOP IN OUR LANE AND FACING US.

Showing the 5 most serious of 352 complaints filed with NHTSA.

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