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do any of you experience a pulsating feeling through the brake pedal when parked or stopped with foot on the brake when the ICE is charging the hybrid batteries?

been getting this intermittently and not sure if it normal since this is our first hybrid vehicle. afraid if i take it in to the dealer that it won't do it on the spot.
 

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The brake booster is both electric and vacuum, using an electric vacuum pump to keep it charged when the ICE is off. Its not impossible you might feel a bump in boost when the ICE turns on or off, but a steady pulsing doesn't sound right.
 
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