2021 Toyota Vehicle Control Apps Not Working TSB

Symptoms

Owners of 2021 Toyota vehicles may experience situations where their vehicle control apps do not function as anticipated. The primary symptom is that "Vehicle control apps might not operate as expected" when attempting to use features like remote start, door lock/unlock, or vehicle status checks through a mobile application.

Diagnosis and Trigger Conditions

Toyota has identified several common reasons why the Toyota control apps not working issue may occur. These include preconditions not being met, specific vehicle settings, and concerns related to network or cellular coverage. For example, certain remote functions may require the vehicle to be in Park, the engine off, and all doors closed.

What Owners Should Know

The functionality of vehicle control apps relies on a combination of factors. It's important to understand that these apps often have specific operating parameters or "preconditions" that must be established for them to work correctly. Additionally, the vehicle's internal settings and the quality of the network or cellular coverage in the vehicle's location can significantly impact app performance. If your Toyota control apps not working, these are the first areas to consider.

Owner Action

If you are experiencing issues with your 2021 Toyota control apps, first check your vehicle's surroundings for good cellular coverage. Ensure all preconditions for the specific app function you are trying to use are met (e.g., doors closed, vehicle in Park). Review your vehicle's infotainment system settings to confirm app-related features are enabled. If the problem persists after checking these basic conditions, it is advisable to contact your authorized Toyota dealership for further diagnosis. This TSB helps technicians understand the potential causes behind why your Toyota control apps not working.

NHTSA ID: 10190459