2024 Toyota Sienna

The 2024 Toyota Sienna is a popular minivan known for its fuel efficiency, spacious interior, and reliability. All 2024 Sienna models come standard with a 2.5-liter four-cylinder engine paired with an electric motor, producing a combined 245 horsepower. It is available only as a hybrid. Owners often praise its comfortable ride, ample cargo space, and standard safety features, but some dislike its acceleration compared to V6-powered minivans and the higher price point compared to some competitors.

Engine

2.5L I4 Hybrid

• Excessive Engine Noise at High RPMs
  • Description/Symptoms: Some owners report a noticeable and somewhat unpleasant engine noise, particularly during acceleration or when climbing hills. This is often described as a strained or rough sound.
  • Solution: There is no permanent fix for this issue. As it is an inherent characteristic of the powertrain design and hybrid system operation.
  • Estimated Cost to Fix: N/A
  • Recalls: None Found

Transmission

CVT (Continuously Variable Transmission)

• Hesitation or Delay in Acceleration
  • Description/Symptoms: Some owners experience a slight delay or hesitation when accelerating from a stop or at low speeds. This can be particularly noticeable when trying to merge into traffic.
  • Solution: In some cases, a software update to the transmission control module (TCM) can improve responsiveness. Replacing the CVT fluid may also help. In more severe cases, transmission replacement might be necessary.
  • Estimated Cost to Fix: Software update: $100 - $200, Fluid change: $200 - $400, Transmission replacement: $4,000 - $6,000+
  • Recalls: None Found

Electrical

• Infotainment System Freezing or Crashing
  • Description/Symptoms: The infotainment system occasionally freezes, becomes unresponsive, or crashes, requiring a restart. This can affect navigation, audio, and other vehicle functions.
  • Solution: Check for software updates and install the latest version. If the problem persists, the infotainment unit may need to be replaced.
  • Estimated Cost to Fix: Software update: $0 - $100, Infotainment unit replacement: $500 - $1500+
  • Recalls: None Found
• Sliding Door Malfunctions
  • Description/Symptoms: The automatic sliding doors may intermittently fail to open or close properly, sometimes requiring manual assistance. This can be due to sensor issues or motor problems.
  • Solution: Check and clean the door sensors. If that doesn’t work, the sliding door motor or control module may need to be replaced.
  • Estimated Cost to Fix: Sensor cleaning: $0, Motor replacement: $300 - $800+, Control module replacement: $400 - $1000+
  • Recalls: None Found

Interior

• Rattling or Squeaking Noises
  • Description/Symptoms: Some owners report hearing rattling or squeaking noises coming from the dashboard, door panels, or rear cargo area. These noises can be distracting and difficult to pinpoint.
  • Solution: Tightening loose screws and fasteners, adding felt padding to contact points, or replacing worn clips may resolve the issue.
  • Estimated Cost to Fix: $50 - $300+ (depending on the source and complexity)
  • Recalls: None Found

Summary

The 2024 Toyota Sienna generally enjoys a reputation for reliability, but some owners have reported issues with the engine noise, transmission hesitation, electrical system glitches, and interior noises. While some problems are relatively minor and easily addressed, others can be more costly and disruptive. The most severe issues tend to be related to the transmission, which could potentially result in a expensive repair. Overall, the Sienna seems to be a well-built minivan that may be susceptible to minor annoyances that can potentially turn into severe issues, so it is very important to research the vehicle and stay on top of the maintenance schedule.