Car Problem Reports

Lexus LS430 Poor Shift Quality at Low Speeds

Lexus LS430 Problem
9 Reports
Me Too

Model Years Affected: 2001, 2004, 2005

Average Mileage: 65,445 mi (20,000 mi - 155,780 mi)


Poor quality low speed transmission shifting may be noted. Our technicians tell us updated transmission software is available which may correct this concern.

  • Jogger, , 29,000 mi

    When I am at a very slow speed and step on the gas the car revs to about 2000 rpm, hestiates and then jerk and then accelerates. It is very noticable at low speeds around 5 to 10 miles per hour. But from a dead stop it seems to shift fine. I had this problem for a while know it with the low low miles is a big disappointment. Suggestions before I get beat over the head for a new tranny from the dealer?

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  • Visitor, , 20,000 mi

    I posted this problem a while back for my 2004 Lexus LS430. I took it to the dealer and they did a software upgrade. After that the problem was fixed but the car was idling very high we hot, around 1100 rpm. Bought it back a 2nd time and with an adjustment the hot idle speed is down to 600 to 700 rpm. Now it shifts correctly. I got it in before the 9 yr warranty problem for this issue. It was a known issue and they extended the warranty....Jogger

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  • Visitor,

    Similar shifting issue.. Was told I may need a new tranny that costs 3700 from dealer. What's should I do?

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  • Visitor,

    The transmission has always felt jerky at slow speeds. Lexus always told me this was normal. I finally found a TSB that addresses this problem. After all these years of Lexus telling me this was normal, I finally got Lexus to update the computer a few months ago. It works a bit better.

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  • Visitor, , 155,780 mi

    If I want to take off from a standing start from a signal light to attempt to pass another vehicle my vehicle seems to buckle a few times and then works normally. what type of problem am I having?

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