Hybrid Technology Unique topics related to the GS450H model hybrid drivetrain and other features/options found only on the GS450H. Please use the main 4GS forum for discussion about shared components with other fourth generation GS models.

shudder at highway speeds

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Old 05-03-19, 03:35 AM
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MichaelB19
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Default shudder at highway speeds

Hi,
I have a 2012 GS450h that shudders at highway speeds. More specifically after taking your foot off the accelerator and allowing the car to coast for a short time, Then accelerating again the car seems to shudder and almost jump forward. It seems to be when the petrol engine re-engages. Any help with this would be great.
Thanks.
Old 05-03-19, 05:23 AM
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bigblack06
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Moved to hybrid section.
Old 05-07-19, 12:13 AM
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peasodos
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Default

Originally Posted by MichaelB19
Hi,
I have a 2012 GS450h that shudders at highway speeds. More specifically after taking your foot off the accelerator and allowing the car to coast for a short time, Then accelerating again the car seems to shudder and almost jump forward. It seems to be when the petrol engine re-engages. Any help with this would be great.
Thanks.
How many Mike's on your car, reason I ask if it's over 100k you should change the spark plugs. Is the engine oil level good? Did th ed issue recently start? Are you the original owner?
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