The 2001 Sequoia shares the proven Tundra platform with a solid 2UZ-FE V8, but this first model year suffers from a catastrophic engine defect and some transmission cooling issues that can end the truck prematurely if not caught early.
2UZ-FE Lower Engine Failure (Piston Ring / Bearing Collapse)
Occasional · high severity
Typical onset: 120,000-180,000 mi
Symptoms: Excessive oil consumption (1+ quart per 1,000 miles), Blue smoke on startup or acceleration, Metallic knocking noise from lower end, especially when cold, Sudden loss of oil pressure and engine seizure in worst cases
Fix: Complete lower-end rebuild or short-block replacement required. 18-25 labor hours depending on shop efficiency and whether you pull the engine. Piston rings, main bearings, rod bearings, and sometimes pistons all need replacement. This is an engine-out job at most shops.
Estimated cost: $4,500-7,500
Transmission Oil Cooler Line Failure / Internal Cooler Clog
Common · high severity
Typical onset: 80,000-140,000 mi
Symptoms: Pink milkshake in radiator overflow (coolant/ATF mixing), Transmission overheating and slipping, Hard or delayed shifts after cooler contamination, Sudden transmission failure if driven after fluid cross-contamination
Fix: Replace radiator (internal cooler cannot be cleaned once contaminated), flush transmission multiple times, replace transmission filter, inspect for internal trans damage. If caught late, transmission rebuild needed. 6-8 hours labor for radiator/flush; add 12-18 hours if trans needs rebuild.
Estimated cost: $1,200-2,000 (cooler/flush only); $3,500-5,000 (if trans damaged)
Transmission Mount Deterioration
Common · low severity
Typical onset: 90,000-150,000 mi
Symptoms: Clunk on acceleration or deceleration, Vibration at idle in Drive, Excessive driveline movement visible under throttle changes
Fix: Replace rear transmission mount (engine side less common but check both). 1.5-2.5 hours labor. Rubber deteriorates from heat and age.
Estimated cost: $250-450
Secondary Air Injection (AIR) System Failures
Occasional · low severity
Typical onset: 100,000-160,000 mi
Symptoms: Check engine light with P0410, P0441, or P0446 codes, Rattling noise from front of engine on cold start (AIR pump), Failed emissions testing in states that require it
Fix: AIR pump, control valve, or vacuum switching valve replacement. 2-3 hours labor. Many owners delete the system in non-emissions states, but that creates permanent CEL.
Estimated cost: $400-800
Lower Ball Joint Wear
Common · medium severity
Typical onset: 80,000-120,000 mi
Symptoms: Clunking over bumps from front suspension, Wandering or loose steering feel, Uneven tire wear on inside edge, Play visible when prying on suspension during inspection
Fix: Replace lower ball joints (both sides recommended). Some aftermarket joints are greaseable. 3-4 hours labor for both sides including alignment.
Estimated cost: $600-1,000
Exhaust Manifold Cracking / Stud Failure
Occasional · low severity
Typical onset: 120,000+ mi
Symptoms: Ticking noise from engine bay that increases with RPM, Exhaust smell in cabin or under hood, Visible soot streaks on manifold
Fix: Replace cracked manifold and drill out broken studs. 4-6 hours labor per side. Left side (driver) more common due to heat and tighter access.
Estimated cost: $800-1,400 per side
Owner tips
Check oil level obsessively—the 2UZ ring issue sneaks up fast and low oil kills these engines
Inspect radiator/trans fluid for any cross-contamination every oil change; catch it early and you save the transmission
Use Toyota Type IV ATF (or equivalent WS) and change it every 30-40k miles despite 'lifetime fill' claim
Budget for lower-end rebuild around 150k miles if oil consumption starts climbing
A capable, spacious truck with one fatal flaw: the early 2UZ engine grenades itself, and the trans cooler will take out the transmission if ignored—buy only with full service records and a pre-purchase inspection focused on oil consumption and fluid condition.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Full-size SUV application; battery located in engine compartment
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Every control module on the 2001-2007 Toyota Sequoia — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Transmission Control Module (TCM)4.5 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Inside transmission case, integrated with valve body assembly
🔧 Toyota Techstream or aftermarket scan tool
⚠️ Requires transmission pan removal and fluid service; adaptive learning resets automatically during driving
Air Conditioning Amplifier (A/C AMP)2.0 hr R&Rno coding
📍 Behind center dash, mounted to HVAC unit
⚠️ Dual-zone climate control on higher trims; dash removal required for access
ABS Actuator / Brake Control Module (ABS ECU)1.5 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Engine compartment, driver side inner fender near master cylinder
🔧 Toyota Techstream or aftermarket scan tool
⚠️ Brake bleeding required after replacement; VSC/TRAC integrated in same unit
📍 Behind center console or integrated in combination meter (varies by year)
🔧 TPMS relearn tool or Toyota Techstream
⚠️ Standard 2005-2007 (TREAD Act compliance); sensor ID registration required after tire service or sensor replacement
Height Control ECU (HEIGHT ECU)0.8 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Rear cargo area, driver side panel near air suspension compressor
🔧 Toyota Techstream
⚠️ Only on models with optional air suspension; height sensor calibration required after replacement
4WD Control ECU (4WD ECU)0.7 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Under driver seat or behind kick panel (varies by year)
🔧 Toyota Techstream or aftermarket scan tool
⚠️ All models have 4WD; transfer case actuator calibration may be needed after replacement
Parking Assist ECU (PA ECU)0.6 hr R&Rno coding
📍 Behind rear bumper, driver side
⚠️ Optional equipment on 2005-2007 models only; rear sonar sensors
Back Monitor Camera ECU (CAMERA ECU)0.5 hr R&Rno coding
📍 Behind rear liftgate trim panel
⚠️ Optional equipment on 2006-2007 models with navigation; camera integrated in liftgate handle
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER · 07E023000
2007-03-29
CERTAIN CARDONE MASTER CYLINDERS WITH PART NUMBERS 10-2925, 10-2987, 10-2987MZA, 10-3083, 11-3015, 11-3042, 11-3044, 11-3045, 11-3047, 11-3064, AND 11-3156, AND WITH DATE CODES LOWER THAN DCA7078 SOLD AS REPLACEMENT EQUIPMENT FOR USE ON THE VEHICLES LISTED ABOVE. THE SEAL ON MASTER CYLINDER CAN FAIL AND LEAK BRAKE FLUID.
Consequence: LOSS OF BRAKE FLUID CAN RESULT IN POOR BRAKING PERFORMANCE, POSSIBLY RESULTING IN A VEHICLE CRASH.
Remedy: CARDONE WILL NOTIFY OWNERS AND OFFER TO REPURCHASE ANY DEFECTIVE MASTER CYLINDERS. THE RECALL BEGAN DURING APRIL 2007. OWNERS CAN CONTACT CARDONE AT 1-800-777-4780.
EXTERIOR LIGHTING · 06E049000
2006-05-24
CERTAIN CK MOTORSPORTS COMBINATION HEADLIGHTS, CLEAR CORNER, BUMPER, AND SIDE MARKER LIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON THE PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.
Consequence: WITHOUT THE AMBER REFLECTORS, THE VEHICLE WILL BE POORLY ILLUMINATED, POSSIBLY RESULTING IN A VEHICLE CRASH WITHOUT WARNING.
Remedy: CK MOTORSPORT WILL NOTIFY OWNERS AND REPLACE THE NONCOMPLIANT LAMPS FREE OF CHARGE. THE RECALL BEGAN ON JULY 1, 2006. OWNERS MAY CONTACT CK MOTORSPORT AT 1-909-610-7211.
WHEELS · 02V129000
2002-05-01
ON CERTAIN 4X2 VEHICLES EQUIPPED WITH AN ALLOY WHEEL TIRE UPGRADE (OPTIONS WM4, WM8, ZL1-ZL4, DH4, OR DH5) INSTALLED BY THE PROCESSING CENTERS IN JACKSONVILLE, FLORIDA OR COMMERCE, GEORGIA, A LABEL IDENTIFYING THE SPARE TIRE AS A TEMPORARY USE SPARE TIRE WAS NOT INSTALLED. THE UPGRADE INCLUDES 4 LARGER SIZE TIRES WITH ALLOY WHEELS. THE ORIGINAL SPARE TIRE/STEEL WHEEL IS NOT PART OF THE UPGRADE AND WAS NOT CHANGED.
Consequence: DIFFERENT OPERATING CHARACTERISTICS CAN BE EXPERIENCED WHEN THE SPARE TIRE IS INSTALLED ON THE VEHICLE.
Remedy: OWNERS WILL BE PROVIDED WITH A CAUTION LABEL AND AN INSERT FOR THEIR OWNER'S MANUAL. OWNER NOTIFICATION BEGAN JULY 15, 2002. OWNERS WHO DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT SOUTHEAST TOYOTA AT 1-800-301-6859.
Performance
Horsepower
240hp
Torque
315lb-ft
0–60 mph
9.8sec
Quarter mile
17.4sec
Top speed
112mph
Fuel economy (EPA)
City
12mpg
Highway
16mpg
Combined
14mpg
Fuel
Regular Gasoline
Capability & size
Towing capacity
6,500lb
Payload
1,355lb
Curb weight
5,445lb
EPA class
Sport Utility Vehicle - 2WD
Wiper blades
First generation Sequoia. Full-size SUV with rear wiper standard.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2001 Toyota Sequoia 4.7L V8 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.