Hybrid Technology Unique topics related to the GS450H model hybrid drivetrain and other features/options found only on the GS450H. Please use the main 3GS forum for discussion about shared components with other third generation GS models.

Check Hybrid System

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Old 07-24-24, 11:48 AM
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pius222
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Default Check Hybrid System

07
GS450H
Current mileage: 16.6xxx
Hybrid battery replaced under warranty in Nov/2012 at 82,630 miles

Here is the scoop, after doing the oil change at Toyota Dealership, the check hybrid system message came up, no VSC nor any other messages. Hooked up to the OBD scanner and threw no codes.
What can cause this? researched some folks say 12V battery, low fuel...etc. I still have half tank.
Is the car safe to drive with this error message? I am thinking to drive it on the freeway to charge a bit. Called Lexus Dealer they indicated I am out of any type of warranty and want me to spend $225 for diag.
Old 07-25-24, 01:01 PM
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Lwerewolf
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Is the check engine light / "check hybrid system" message still on? If so, whatever scanner you used didn't find the hybrid ECU codes.
Old 07-25-24, 01:08 PM
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pius222
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[QUOTE=Lwerewolf;11761606]Is the check engine light / "check hybrid system" message still on? If so, whatever scanner you used didn't find the hybrid ECU codes.[/QUOTE

No other lights, except the exclaimation triangle and the "check hybrid system" message. I used the Maxiscan 300.
Not a tech savvy guy, wouldn't know nor have the proper equipment to check the hybrid battery packs, not sure why after the oil change, this error would come up.
Old 07-25-24, 03:35 PM
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Lwerewolf
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Get a good obd2 bluetooth dongle. Both hybridassistant and dr.prius have recommendations. For quick jobs, I usually read my codes with torque (pro, but the free version should be just fine for the purpose) - it did read the p0a80 code way back in 2018 or so when I had it, which was more than I expected out of it (the hybrid codes aren't set on the engine ECU).

I'm using the obdlink mx, but you absolutely don't have to get something that expensive - the vlinker and carista adapters appear to be just as fit for purpose. Again - check the recommendations, google around a bit, ask friends - perhaps one of them has an adapter?

If you're wondering whether to get techstream - it's invaluable for some things, but overall it's the last thing that I'd use given how slow it is.

"Check hybrid system" can appear for any number of reasons, with a good number of them not related to the hybrid system at all.
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