2003 Toyota Sequoia

Introduction:

The 2003 Toyota Sequoia is a full-size SUV offered with a choice of two engines: a 4.7L V8 or a 5.7L V8. Both engines are mated to a 5-speed automatic transmission. The Sequoia is known for its spacious interior, comfortable ride, and off-road capabilities. However, it has also been plagued by several issues.

Engine

4.7L V8

• Intake manifold gasket failure: Description/Symptoms: Leaks coolant, causing overheating and engine damage. Solution: Replace intake manifold gaskets. Estimated Cost to Fix: $500 - $1,000+
• Valve seat insert failure: Description/Symptoms: Causes loss of compression and engine misfires. Solution: Replace valve seats. Estimated Cost to Fix: $2,000 - $4,000+

5.7L V8

• Timing chain tensioner failure: Description/Symptoms: Worn tensioner causes timing chain to skip, resulting in catastrophic engine damage. Solution: Replace timing chain tensioner and timing chain. Estimated Cost to Fix: $2,000 - $4,000+
• Spark plug blowout: Description/Symptoms: Occurs when spark plugs are over-tightened, causing them to blow out of the cylinder head. Solution: Replace spark plugs and cylinder head. Estimated Cost to Fix: $1,000 - $2,000+

Transmission

• 5-speed automatic transmission: Description/Symptoms: Transmission slips or fails to engage gears. Solution: Rebuild or replace transmission. Estimated Cost to Fix: $2,000 - $4,000+

Suspension

• Front suspension ball joint failure: Description/Symptoms: Causes clunking noises and loose steering. Solution: Replace ball joints. Estimated Cost to Fix: $500 - $1,000+
• Rear suspension leaf spring failure: Description/Symptoms: Causes rear-end sagging and rough ride. Solution: Replace leaf springs. Estimated Cost to Fix: $500 - $1,000+

Electrical

• Alternator failure: Description/Symptoms: Loss of electrical power, dim lights, and battery drain. Solution: Replace alternator. Estimated Cost to Fix: $500 - $1,000+
• Starter failure: Description/Symptoms: Engine fails to start. Solution: Replace starter. Estimated Cost to Fix: $500 - $1,000+

Exterior

• Plastic side mirrors: Description/Symptoms: Fade and crack over time. Solution: Replace side mirrors. Estimated Cost to Fix: $200 - $500+

Interior

• Dashboard cracking: Description/Symptoms: Develops cracks over time. Solution: Replace dashboard. Estimated Cost to Fix: $1,000 - $2,000+
• Climate control system failure: Description/Symptoms: Heater or air conditioner fails to operate properly. Solution: Replace climate control unit or repair wiring. Estimated Cost to Fix: $500 - $1,000+

Summary

The 2003 Toyota Sequoia has a number of potential issues that can be costly to fix. The most severe and expensive issues include valve seat insert failure, timing chain tensioner failure, and transmission failure. While some issues are common to all Sequoia models, others are specific to certain engine or transmission options. Overall, it is important for potential buyers to be aware of these issues and factor them into their purchasing decision.