Tundra hybrid start stop issue

Hey, I'm having a weird issue with my 2021 Toyota Tundra hybrid. It has about 117500 km on it. The start-stop system stopped working. I get an error message and a warning light on the dashboard, and the engine just shuts off sometimes. Could it be a simple fix, like the car battery? Has anyone else run into this?

4 comment(s)

Interesting. I drive a Tundra hybrid as well, and your problem sounds familiar. Did you check your battery? How old is it? The eco mode relies heavily on it, and problems will occur if the battery is weak.

Thanks for your reply! I haven't checked the battery yet, it's the original one that came with the truck. It must be nearly three years old. If the battery is weak, can this really cause the engine to shut off?

Yes, a failing battery can absolutely cause that, especially with the start-stop system. These hybrid systems are sensitive. I ended up needing a new battery. The workshop diagnosed it as 'battery heavily discharged or defective', which cost me 290€. Honestly, though, I'd suggest taking it to a workshop to be sure. Better safe than sorry, right?

Thank you so much! I'll get the battery checked out right away. I appreciate the advice and will take it to the workshop if needed. Thanks again!

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