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Recent content by nosna21

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    ibooster braking system logic issue [and discussion around brake failure claim in shanghai]

    The author of this investigation report "Tesla Regen, Brakes, and Sudden Acceleration" claims the friction braking and regen braking on Teslas are separate (with the possible exception of RWD models).
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    Brake booster failure on brand new Model Y

    Got car back yesterday (4th business day after drop off). SC has replaced the iBooster and did a road test to ensure functional brakes. Kudos again to the Fremont SC for addressing this issue so quickly. I also tested it myself by purposefully pressing both the brake and "go" pedals. Got the...
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    ibooster braking system logic issue [and discussion around brake failure claim in shanghai]

    When the iBooster fails, you will most likely see an orange brake warning, as well as a "Power braking assist reduced" error. This means the system *thinks* the iBooster has failed (i.e. not purposefully reducing the booster power in favor of regen braking). I have not read any report of the...
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    Brake booster failure on brand new Model Y

    Another thing I noticed -- it seems the IBST_a082 and DI_a245 alerts tend to be preceded by the DI_a173 "Both pedals pressed" alert. See this other post: Power braking assist reduced I drive with one foot and I don't have a big foot/shoe, so I am pretty sure I didn't press both pedals at once...
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    Power braking assist reduced

    FWIW, this exact same failure happened to me as well, on a brand new 2021 Model Y LR with less than 250 miles (delivered Mar 31). I am at California so there was no snow or rain; temperature was around 15C. Car is currently at service center waiting for the replacement iBoost. I've posted my...
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    Brake booster failure on brand new Model Y

    Less than 2 weeks after picking up our brand new 2021 Model Y LR, we experienced a scary partial brake failure in the middle of driving. Symptom was the brake pedal becoming very stiff; it took great leg strength to press down the pedal to have some braking effect. The orange brake warning light...

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