2004 Toyota Sienna Service and Repair Manual

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Factory-Grade Data

2004 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 Limited
  • 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

2004 Toyota Sienna Recalls & Complaints

NHTSA #13V42900026/09/2013Component: POWER TRAIN:AUTOMATIC TRANSMISSION

Toyota is recalling certain model year 2004-2005 Sienna vehicles manufactured January 10, 2003, through August 10, 2005; and model year 2007-2009 Sienna vehicles manufactured February 20, 2007, throug

Consequence

If the shift lever is moved out of the Park position without the brake applied, the transmission wil

Remedy

Toyota will mail interim notifications to owners beginning in late October 2013. When parts are ava

NHTSA #09V23400025/06/2009Component: EQUIPMENT:OTHER:LABELS

TOYOTA IS RECALLING CERTAIN MODEL YEAR 2006 THROUGH 2009 SIENNA AND 2009 LEXUS GX PASSENGER VEHICLES. THE VEHICLE CAPACITY WEIGHT ON THE TIRE AND LOADING INFORMATION LABEL AND THE GVWR ON THE CERTIFI

Consequence

THE GVWR IS INSUFFICIENT FOR THE LOAD CARRYING CAPACITY OF THE VEHICLES.

Remedy

TOYOTA WILL NOTIFY OWNERS INSTRUCTING THEM TO RETURN THEIR VEHICLE TO A TOYOTA OR LEXUS DEALER FOR A

NHTSA #05V32700020/07/2005Component: SEAT BELTS

ON CERTAIN MINI VANS, IN THE MIDDLE ROW SEATING POSITION, THE SHOULDER PORTION OF THE SEAT BELT MAY BIND IN THE BEZEL TRIM PIECE. THE AFFECTED SEAT BELT BEZEL IS LOCATED ON THE SHOULDER PORTION OF T

Consequence

IF THE SEAT BELT BINDS IN THE BEZEL, THAT EXTRA WEBBING MAY EXIST IN THE SEAT BELT WHICH COULD RESUL

Remedy

DEALERS WILL REPLACE THE SEAT BELT BEZEL AND CLIP. THE RECALL BEGAN AUGUST 5, 2005. OWNERS MAY CON

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

NHTSA #09V02300016/01/2009Component: VEHICLE SPEED CONTROL:ACCELERATOR PEDAL

TOYOTA IS CONDUCTING A SAFETY IMPROVEMENT CAMPAIGN INVOLVING 26,501 EARLY 2004 MY SIENNA VEHICLES. IN THE EVENT THE RETENTION CLIP USED TO SECURE THE FLOOR CARPET COVER IS MISSING, THE COVER CAN INTE

Consequence

IF THIS OCCURS, THE ACCELERATOR PEDAL CAN BECOME STUCK WHICH COULD RESULT IN A VEHICLE CRASH.

Remedy

DEALERS WILL REPLACE THE RETENTION CLIP AND FLOOR CARPET COVER AT NO CHARGE. THE CAMPAIGN BEGAN ON

NHTSA #03V29100012/08/2003Component: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

ON CERTAIN SPORT UTILITY VEHICLES, A PART OF THE FUEL TANK MAY BECOME DAMAGED WHEN CRASHED IN THE INSURANCE INSTITUTE FOR HIGHWAY SAFETY'S (IIHS) 40 MPH FRONTAL OFFSET CRASH TEST CONDITIONS, DUE TO TH

Consequence

IF THE FUEL TANK BECOMES DAMAGED AND FUEL LEAKAGE OCCURS, A FIRE MAY RESULT IN THE PRESENCE OF AN IG

Remedy

DEALERS WILL REPLACE THE FUEL TANK. OWNER NOTIFICATION BEGAN AUGUST 1, 2003. OWNERS SHOULD CONTAC

NHTSA #11V53900009/11/2011Component: ENGINE AND ENGINE COOLING

TOYOTA IS RECALLING CERTAIN MODEL YEAR 2004 AVALON VEHICLES; 2004 AND 2005 CAMRY, CAMRY SOLARA, HIGHLANDER, AND SIENNA VEHICLES, 2006 HIGHLANDER HYBRID; 2004 AND 2005 LEXUS ES330 AND RX330; AND 2006 L

Consequence

IN SOME CASES, THE BELT FOR THE POWER STEERING PUMP MAY BECOME DETACHED FROM THE PULLEY WHICH COULD

Remedy

TOYOTA WILL NOTIFY OWNERS, AND DEALERS WILL CHECK THE CRANKSHAFT PULLEY TO IDENTIFY WHETHER IT WAS P

NHTSA #10V03600003/02/2010Component: EQUIPMENT:OTHER:LABELS

SOUTHEAST TOYOTA IS RECALLING CERTAIN MODEL YEAR 2005-2011 PASSENGER VEHICLES FOR FAILING TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, "TIRE SELECTION AND RIMS."

Consequence

A DRIVER MAY OVERLOAD A VEHICLE WHICH MAY INCREASE THE RISK OF A CRASH.

Remedy

DEALERS WILL MAIL TO CONSUMERS THE CORRECTED LABEL OR THE CUSTOMER WILL HAVE THE OPTION FOR DEALERS

TSB #11012744

The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicl

TSB #11012743

To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover. The purpose of the wheel film is to shield the disc brake rotor from weather elements and in

TSB #11012742

Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere. If these acidic compounds settle on an exposed vehicle, especially the horizontal areas such as the hood

TSB #11012735

Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal painted surfaces. This material protects from acid rain, environmental fallout, and rail contamination. Follow the Removal Procedure i

TSB #11012727

Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad tracks, train wheels, exposure to heavy machinery facilities, grinding, welding, etc. This type of contamination can be identified by the

TSB #11007445

The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and remain on a painted vehicl

TSB #11007444

To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover. The purpose of the wheel film is to shield the disc brake rotor from weather elements and in

TSB #11007443

Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere. If these acidic compounds settle on an exposed vehicle, especially the horizontal areas such as the hood

Showing the 8 most recent of 257 technical service bulletins on file with NHTSA.

20170126Component: AIR BAGSCrash reported3 injured

MY CAR WAS MOVING AT 5 MPH GOING INTO A PARKING LOT WHEN A HIGH SPEEDING TRACK JUMPED OUT OF HIGHWAY, HIT MY CAR STRAIGHT ON THE RIGHT SIDE,THE STRONG IMPACT CAVED THE SIDE DOOR MORE THAN ONE FOOT,CU

20120710Component: AIR BAGSCrash reported3 injured

TL* THE CONTACT OWNED A 2004 TOYOTA SIENNA. THE CONTACT STATED THAT WHILE DRIVING 35 MPH, THE FRONT DRIVER'S SIDE TIRE BLEW OUT, CAUSING THE VEHICLE TO ROLL OVER. NONE OF THE AIR BAGS DEPLOYED DURING

20100513Component: AIR BAGSCrash reported3 injured

TL*THE CONTACT OWNS A 2004 TOYOTA SIENNA. WHILE DRIVING AT 65 MPH, THE VEHICLE WAS INVOLVED IN A CRASH BUT THE AIR BAGS DID NOT DEPLOY. THREE PEOPLE WERE INJURED AND A POLICE REPORT WAS FILED. THE VEH

20140410Component: AIR BAGSCrash reported2 injured

2004 TOYOTA SIENNA. CONSUMER WRITES IN REGARDS TO VEHICLE ACCIDENT AND SHIFT LOCK SOLENOID RECALL NOTICE, RECEIVED AFTER ACCIDENT. *SMD THE CONSUMER AND HER HUSBAND WERE INVOLVED IN AN ACCIDENT, WH

20140410Component: POWER TRAINCrash reported2 injured

2004 TOYOTA SIENNA. CONSUMER WRITES IN REGARDS TO VEHICLE ACCIDENT AND SHIFT LOCK SOLENOID RECALL NOTICE, RECEIVED AFTER ACCIDENT. *SMD THE CONSUMER AND HER HUSBAND WERE INVOLVED IN AN ACCIDENT, WH

Showing the 5 most serious of 2588 complaints filed with NHTSA.

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