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		Toyota Nation Forum : Toyota Car and Truck Forums > Toyota Truck, SUV and Van Forums > Highlander Forum > 2nd Generation (2008+)
Noise while engine is off!

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2nd Generation (2008+) Forum dedicated to the discussion of 2nd generation Toyota Highlanders.

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09-14-2011, 05:41 PM	#1 (permalink)
ibdenise New TN User Join Date: Sep 2011 Location: 26301 Posts: 2 Gameroom cash: $1900 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Score: 0 reviews	Noise while engine is off! I have a 2011 highllander limited and periodically, a noise comes from underneath when it's OFF. Yes, when it's off. I'll go out into the garage and hear it humming - quite loudly. It will quit if I get inside, turn the engine on and then back off. Does anyone have a clue what this could be? Thanks in advance!

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09-14-2011, 06:14 PM	#2 (permalink)
*TrailDust* *Do you feel lucky?* Join Date: Mar 2008 Location: Communist Commonwealth of California Posts: 17,051 Gameroom cash: $3632850 Thanks: 566 Thanked 1,211 Times in 937 Posts iTrader Score: 1 reviews	See the "Humming/motor sound" entry in the DIY: Common Problems & Solutions sticky. __________________ ------------------------- 2008 Highlander Base 4WD 2002 Avalon XL 1987 Suzuki Samurai 4X4 - Treading where no Jeep can follow....

The Following User Says Thank You to TrailDust For This Useful Post:

ibdenise (09-14-2011)

09-14-2011, 06:23 PM	#3 (permalink)
ibdenise New TN User Join Date: Sep 2011 Location: 26301 Posts: 2 Gameroom cash: $1900 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Score: 0 reviews	Awesome! Thank you, thank you, thank you!

09-15-2011, 10:21 AM	#4 (permalink)
typesix Official TN Member Join Date: Dec 2006 Location: MA Posts: 246 Gameroom cash: $25320 Thanks: 0 Thanked 12 Times in 12 Posts iTrader Score: 0 reviews	It's your emission system making that noise and is normal. Read about it in your owner's manual.

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