John C
Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3292
  
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Given the advice by stapldm here: http://www.disco3.co.uk/forum/post562882.html relaying Webasto's advice that the FBH should be run once a month to keep it working, presumably (given the phone mod) there's a way to create a simple switch system that can fire up the FBH manually? Perhaps a switch located under the bonnet near the heater that could force start the FBH (ie a switch to replace the entire phone mod).
Anyone got any tips? I presume it's not as simple as just shorting the two pins on the back of the FBH plug where the phone mod connects to? 2020 SDV6 D5 HSE, Carpathian Grey +
2022 Tesla Model Y LR... almost Carpathian Grey
Previously : 2005 TDV6 SE Auto, Cairns Blue (288K) - ours for 16 years
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 10th Dec 2009 11:46 am |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10506
 
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I have been looking at Webasto's 1533 timer.
Like John C I would like to be able to turn the FBH on regardless of ambient temperature.
Can this be done with the Webasto 1533 timer?
If not might it be possible to install Telestart T100HTM which appears to have all the required functionality (at a price).
Has anyone installed a T100HTM in a Disco3?
NJSS Am I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
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| 10th Dec 2009 12:18 pm |
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Bodsy
Site Sponsor
Member Since: 06 Nov 2006
Location: In the Clubhouse
Posts: 21361
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Just use a coolant spray on the temperature sensor if you want to power it up once a month  Bodsys Brake Bible
D4/D3 Remote FBH heat kits
BAS Remaps/ EGR Blank
Transmission Flush
Software updates/enabling
Clock/ SNOTM /3Flash / 4x4Info /BT Update /Service Reset/Error Codes / Gearbox Reset
See It Here
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| 10th Dec 2009 12:22 pm |
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John C
Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3292
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Interesting... I'd thought of sticking an ice pack over the sensor (might be less severe/sudden/intense?), but thought the temperature was gained not just from the sensor in the engine compartment, but also the daylight sensor on the dash/windscreen? 2020 SDV6 D5 HSE, Carpathian Grey +
2022 Tesla Model Y LR... almost Carpathian Grey
Previously : 2005 TDV6 SE Auto, Cairns Blue (288K) - ours for 16 years
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| 10th Dec 2009 12:34 pm |
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pollafero
Member Since: 06 Nov 2009
Location: Ghent
Posts: 90
 
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Do base spec D3 have light sensor? Not sure. Yet they (some) have FBH. Besides, if light sensor is involved: what when I start at 10 am on a clear freezing day? When logic and proportion have fallen sloppy dead, remember what the dormouse said: feed your head. (Jefferson Airplane)
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| 10th Dec 2009 12:48 pm |
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John C
Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3292
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Good point, maybe I didn't think that one through...  2020 SDV6 D5 HSE, Carpathian Grey +
2022 Tesla Model Y LR... almost Carpathian Grey
Previously : 2005 TDV6 SE Auto, Cairns Blue (288K) - ours for 16 years
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| 10th Dec 2009 12:49 pm |
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blue meanie
D3 Decade
Member Since: 04 Aug 2005
Location: Newbury
Posts: 6861
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NJSS wrote:
Can this be done with the Webasto 1533 timer?
NJSS
yes
I only know this because I kept leaning on the remote that I installed with mine last year and kept setting it off ( in the middle of the summer BTW ). and theeeeennn......???
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| 10th Dec 2009 3:01 pm |
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John C
Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3292
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Do you know if the timer effectively isolates/overrides the control of the FBH from the D3? ie - in the situation where there are lock-out fault codes on the FBH, will the timer control bypass all this and just fire it up?
Thanks 2020 SDV6 D5 HSE, Carpathian Grey +
2022 Tesla Model Y LR... almost Carpathian Grey
Previously : 2005 TDV6 SE Auto, Cairns Blue (288K) - ours for 16 years
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| 10th Dec 2009 3:07 pm |
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blue meanie
D3 Decade
Member Since: 04 Aug 2005
Location: Newbury
Posts: 6861
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no idea I'm afraid but it still shuts off when the D3 is woken up, so on that premise I would imagine not. and theeeeennn......???
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| 10th Dec 2009 3:09 pm |
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John C
Member Since: 28 Aug 2007
Location: East Yorkshire
Posts: 3292
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Sorry - what I meant was. If the D3 is powered down and asleep, and you attempt to fire the FBH using the timer switch - will it fire up, irrespective of whether there are fault codes logged on the D3? I was just thinking it would be useful in isolating problems with the FBH. 2020 SDV6 D5 HSE, Carpathian Grey +
2022 Tesla Model Y LR... almost Carpathian Grey
Previously : 2005 TDV6 SE Auto, Cairns Blue (288K) - ours for 16 years
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| 10th Dec 2009 3:14 pm |
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blue meanie
D3 Decade
Member Since: 04 Aug 2005
Location: Newbury
Posts: 6861
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who knows? I'm happy to say the FBH is one of the few parts on the vehicle that I haven't had any problems with  and theeeeennn......???
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| 10th Dec 2009 3:20 pm |
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stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
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The 1533 has a 'fire now' button on it which will give you by default a 30 minute burn. Note that most people have the new w-bus controlled FBH which cannot sadly be fired up with any simple switch.
Note that the car still has to be asleep for this button to work, so key out, and EPB/Radio displays asleep.
The exception to this rule is a real battery killer; if it's under 6C and you have the keys in pos 1 or 2, the heater can be started with the fire now button even though the engine isn't running. As soon as ambient temp rises to 6 or above, the aircon ecu starts sending regular shutdown messages to the FBH over the CAN bus again and our little bit of frostbite relief comes to an end.
I have a (long time stalled) project underway to introduce two screened relays into the CAN bus at the FBH end, so that when the timer is trying to get the heater to run, it will disconnect the CAN bus from the car, allowing me to manually run the heater whenever I want ('cos I still think I could do with extra heat in the 6C to 9C range).
Once I'm happy that my circuit won't affect CAN operation in the car I'll fit it and let all know my test results.
I have to write some CAN monitoring software for my CAN probe first though to spot if the number of errors on the bus increases when the relays trip, so it's a long while off yet as my works project is a complete  at present  Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
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| 10th Dec 2009 3:48 pm |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10506
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blue meanie
Thanks...but what you say conflicts with what Slimer said here:-
http://www.disco3.co.uk/forum/topic16361.h...;start=330
Quote:As soon as you unlock and open a door the timer will be overridden and the heater turned off. If the coolant and external temps are still low enough the D3 will fire it up again when you start the engine
I remain confused!
NJSS Am I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
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| 10th Dec 2009 3:51 pm |
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blue meanie
D3 Decade
Member Since: 04 Aug 2005
Location: Newbury
Posts: 6861
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yes this is all true but if you fit a secondary remote switching device such as GSM dialer/local RF remote etc in tandem with the Webasto 1533 then the temp thing doesn't appear to matter ( on mine anyway  ) and theeeeennn......???
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| 10th Dec 2009 4:00 pm |
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stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
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John C wrote:will it fire up, irrespective of whether there are fault codes logged on the D3?
FBH faults are stored in the FBH itself, so if it's locked out the 1533 still cannot start it. Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
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| 10th Dec 2009 4:23 pm |
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