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High pitched whine from behind grill
QUATTROMAN
 

Posts: 81
Joined: Mar 2011
Location: Devon
Post: #1
High pitched whine from behind grill

I heard a high pitched whine from behind grill after engine has been stopped for approx 15 mins -ambient temperature approx 5 deg- surely its not the coolant pump running as I had only been out for a short 20 min drive through town and back.
I managed to stop the noise by restarting the engine and then shutting down a moment later and then listend for the high pitch sound which was still there, but I then heard a click and the noise stopped
I dont think it was the cooling fan but sounded more like a whine -havnt heard it since.
I could understand if the engine temp was hot but as I probably reached no more than 35 -40 mph over the 20 mins it probably hadn't even reached full operating temp.
Any one else experienced this ?

Fuji White 5 door Dynamic SD4 AUTO +LUX PACK + Adaptive Xenons -Built 22-12- 2011 - delivered 12-1-12
27-01-2012 11:39pm
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PhilSkill
 

Posts: 3,880
Joined: Jun 2011
Location: Warwickshire
Post: #2
RE: High pitched whine from behind grill

Yes, mine does this a lot, dont think its abnormal?! heard it from other cars too, but dont know what it is. I thought it might be a pwm control on the lights but still get it when the lights are off, only lasts a few minutes after stopping sometimes, as far as I know!

MY12 Fuji Dynamic SD4 Manual, Pano Roof, Electric Tailgate with own Close module
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27-01-2012 11:51pm
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Claud
 

Posts: 198
Joined: Aug 2011
Location: Surrey
Post: #3
RE: High pitched whine from behind grill

Our Freelander and Evoque does it, both SD4 engines. Not sure what it is, sure it is normal though!

[Image: 118733.png]
2013 Discovery HSE Luxury Corris Grey
Sold - 2011 Evoque SD4 Prestige, Auto, Magnaride, Orkney Grey, Lux Pack, TPMS, Heated Steering Wheel
2010 Freelander SD4
1997 Defender 90 XD Wolf (ex Ghurkas)
1991 Defender County 110 V8
1959 Series II
1953 Series I
1952 Minerva Ambulance
27-01-2012 11:58pm
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gomark
 

Posts: 113
Joined: Sep 2011
Location: Kent
Post: #4
High pitched whine from behind grill

Mine does it too...

________________________________________________________________________
Black Dynamic Sd4 auto with heated steering wheel and 20" polished bling style 8 wheels 8Cool
28-01-2012 12:04am
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Claud
 

Posts: 198
Joined: Aug 2011
Location: Surrey
Post: #5
RE: High pitched whine from behind grill

There are a couple of threads in the Freelander 2 forum, various ideas such as invertors, turbo coolers, 4wd drive compressors, egr actuator, but all guesses, no definitive word from anyone who actually knows the source of the noise. The most popular guess was something electrical.

[Image: 118733.png]
2013 Discovery HSE Luxury Corris Grey
Sold - 2011 Evoque SD4 Prestige, Auto, Magnaride, Orkney Grey, Lux Pack, TPMS, Heated Steering Wheel
2010 Freelander SD4
1997 Defender 90 XD Wolf (ex Ghurkas)
1991 Defender County 110 V8
1959 Series II
1953 Series I
1952 Minerva Ambulance
28-01-2012 12:13am
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Aussievoque
 

Posts: 142
Joined: Sep 2011
Location: Australia
Post: #6
RE: High pitched whine from behind grill

Same with mine - thought it might be related to the auto lights or something similar.

2012 TD4 - Firenze - White leather - Style 6 - Panoramic roof - Keyless Entry - Bi-Xenons - Clearview - Navigation
28-01-2012 12:48am
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cjfp
 

Posts: 2,917
Joined: Nov 2010
Location: Hampshire
Post: #7
RE: High pitched whine from behind grill

I only spotted this yesterday after changing my interior bulbs - thought it might be related to that and was panicing slightly ... However, all the above people with the same have put my mind at rest!

Pure 3dr SD4 Tech Man ; Firenze Red ; 19" Style 3 ; Pano ; Ebony / Ivory Int ; Auto dim rear view ; 2 seats ; Park Aid - Rear cam ; Ext. folding mirrors ; Adap Xenon ; Fogs ; Mud Flaps ; Side Steps - Rec'd 28/12/11 - Sadly going 6/6/14 - Gone, now running BMW X6
28-01-2012 11:42am
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defender_uk
 

Posts: 575
Joined: Aug 2011
Location: York
Post: #8
RE: High pitched whine from behind grill

the 2010 RRS does it too.....I just say it is talking to itself.....

Defender_uk

Evoque Prestige Lux, OG, maual, style 4 wheels

comes to live with Defender 90 TDCi 07
28-01-2012 04:29pm
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rchrdleigh
 

Posts: 282
Joined: Sep 2011
Location: England
Post: #9
RE: High pitched whine from behind grill

Nothing to worry about - it's just the various systems in the vehicle shutting down. On Freelander 2 if you double lock it forces the system to shut down faster and stop the whine, assume Evoque is the same.
28-01-2012 06:41pm
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cjfp
 

Posts: 2,917
Joined: Nov 2010
Location: Hampshire
Post: #10
RE: High pitched whine from behind grill

But why can't they shut down quietly?!

Pure 3dr SD4 Tech Man ; Firenze Red ; 19" Style 3 ; Pano ; Ebony / Ivory Int ; Auto dim rear view ; 2 seats ; Park Aid - Rear cam ; Ext. folding mirrors ; Adap Xenon ; Fogs ; Mud Flaps ; Side Steps - Rec'd 28/12/11 - Sadly going 6/6/14 - Gone, now running BMW X6
28-01-2012 06:51pm
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