2008 Toyota Alphard Hybrid – Intermittent Start Issue in EV

[Efour]

Hi everyone,

I’m experiencing a peculiar issue with my 2008 Toyota Alphard Hybrid (E-FOUR). Here’s what’s happening:

The car usually starts fine and drives normally.

However, occasionally when switching from EV mode to engine mode, the engine fails to start.

Attempting to start again produces a high-pitched “wiiiiiing” noise, almost like a starter motor or magnetic clutch isn’t engaging.

No warning lights appear on the dashboard.

I suspect it might be related to the sprag clutch or starter/motor components, but I’m not certain.

If any hybrid transmission experts have encountered a similar issue or can offer guidance, your advice would be greatly appreciated!

Thank you so much in advance.