ricric
Member Since: 27 Nov 2005
Location: Somerset
Posts: 85
  
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| Modifying heated seat behaviour |
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Does anyone know if it is possible to switch off the automatic control of the heated seat control. In other words, stop them going from full heat (two lights) to half heat (one light) after a variable period and allow this to be switched manually? Zambezi Silver SE / Ebony Leather
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 2nd Jan 2006 6:14 am |
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grommet
Member Since: 15 Feb 2005
Location: Northern California
Posts: 331
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If you are asking for an easy hack to keep them on... not to my knowledge. If you press twice from off, it does go to half heat immediately... but it's still on the "timer."
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| 2nd Jan 2006 6:27 am |
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kevofcov
Member Since: 06 Nov 2007
Location: Other end of M69
Posts: 533
  
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Can I flag up this question again. It would be nice to have full heat longer as my wife is a little disappointed - her behind is not as hot as when in our previous car. Looks alright from where I am though. 
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| 23rd Nov 2008 6:22 pm |
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Gareth
Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26702
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Just tell her to press the button twice, and full heat will resume.
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| 23rd Nov 2008 7:32 pm |
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10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
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The alogrithm that controls the heated seat is dependent upon external temperature, cabin temperature (% of target temperature) seat temperature, solar gain and battery voltage, so the easy way to modify the behaviour is to add a resistor either in series or parallel (dependent on whether the thermistor is a +ve or -ve temperature coefficient) after calculating the thermistor value against the seat target temperature and then calculating the required offset. Alternatively, build an astable timer to replicate the PWM signal and use this instead of the ATCU output
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| 23rd Nov 2008 7:47 pm |
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Walmsleys
Member Since: 04 Sep 2007
Location: Leyland
Posts: 601
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I've tried running this through Babelfish but it can't translate it into English! Sounds damned impressive though and I, for one, won't argue with your solution! 2013 D4 HSE Luxe in Indus Silver
(previously 2015 Defender Urban Truck 90XS in Havana)
(previously 2013 D4 XS in Fuji White)
(previously 2011 D4 XS in Stornaway Grey, auto, black leather, reversing camera and removable tow bar)
(previously 2011 Freelander 2, blue (Mrs B's)
(previously 2007 TDV6 D3 SE Zermatt Silver, auto, black leather, an Uncle Ray plate and AT2s)
(previously 2001 Freelander One, blue)
(previously 1967 Series 2, Green)
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| 23rd Nov 2008 7:55 pm |
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TazDaz
Member Since: 07 May 2007
Location: South East Essex
Posts: 2858
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10forcash - is that the Bombay Sapphire talking ? 
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| 23rd Nov 2008 8:02 pm |
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10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
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Had some clients on a half-day LRE 'introduction' voucher some time ago, apparently the one thing they (or rather the precocious little 14 year old t  t in the back) found 'most annoying' about the RRS was 'having to press the heated seat button every 20 minutes' 
Not a word about the handling, the TDV8, the comfort, safety, on or off road ability, build quality JUST THE EFFIN' HEATED SEATS IN THE BACK 
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| 23rd Nov 2008 8:03 pm |
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DiscoStu
Member Since: 09 Apr 2006
Location: London
Posts: 11412
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No - he said use a resistor to fool the car into thinking the temperature isn't what it is 
Easier to press the button twice  Disco 5 HSE Lux
https://www.youtube.com/watch?v=peyiqaJrmMU
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| 23rd Nov 2008 8:04 pm |
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10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
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TazDaz wrote:10forcash - is that the Bombay Sapphire talking ?
No mate, that's a response based upon my own research - did I mention the drivers seat now heats up along with the windscreen when I send the D3 a text message? 8)
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| 23rd Nov 2008 8:05 pm |
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countrywide
Member Since: 16 Sep 2007
Location: UK
Posts: 6019
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Wouldn't changing the thermistor value of the seat sensor with a resistor increase the temperature of the seat and risk it overheating if you get it wrong
Safer to buy some thermals
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| 23rd Nov 2008 8:07 pm |
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10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
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Yes
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and maybe 
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| 23rd Nov 2008 8:12 pm |
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TazDaz
Member Since: 07 May 2007
Location: South East Essex
Posts: 2858
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10forcash wrote:..did I mention the drivers seat now heats up along with the windscreen when I send the D3 a text message? 8)
no you didn't  presumably both of those are powered from the 2nd battery then 
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| 23rd Nov 2008 8:22 pm |
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10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
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Yep
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| 23rd Nov 2008 8:56 pm |
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jkp
Member Since: 17 Sep 2005
Location: Living among Bawbags
Posts: 4528
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Gareth wrote:Just tell her to press the button twice, and full heat will resume.
Thats all I get on a long journey....Silence during the journey, with the only noise being the click, click from her extended index finger, then back to silence 
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| 23rd Nov 2008 9:22 pm |
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