bluebarchetta
Member Since: 25 Oct 2005
Location: Aylesbury
Posts: 524
  
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Last winter there was some discussion about using the Webasto T91 telestart as an alternative to the 1533 timer and Maplin remote. Did anyone try this? If so did it work?
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 7th Oct 2008 8:21 pm |
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wiggs
Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372
 
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from the outcome of the descussions i would say no G4 Gone ...but not forgotten
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| 7th Oct 2008 8:23 pm |
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10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
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Think the main hurdle was the price differential.... it should work
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| 7th Oct 2008 9:07 pm |
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bluebarchetta
Member Since: 25 Oct 2005
Location: Aylesbury
Posts: 524
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Thanks - unless one happened to come up cheap enough to risk it, I 'll go for the tried and tested.
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| 8th Oct 2008 5:24 am |
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JakobVels
Member Since: 11 May 2006
Location: Copenhagen
Posts: 223
 
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Have anyone here successfully paired a T91 telestart with a 2006 model FBH ?
Are there any diff between model years ?
Cheers
Jakob
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| 27th Oct 2008 9:22 am |
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allyv
Member Since: 11 May 2013
Location: reading
Posts: 46
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[quote="JakobVels"]Have anyone here successfully paired a T91 telestart with a 2006 model FBH ?
Are there any diff between model years ?
Last edited by allyv on 14th Aug 2013 7:10 pm. Edited 1 time in total
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| 11th May 2013 9:38 pm |
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epninety
Member Since: 12 Oct 2012
Location: Hampshire
Posts: 329
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No, it won't work without one of the various solutions in the middle.
As it happens, I'm working on my solution to the same problem as we speak. I'll post more if and when I get it working.
Hardware is easy, my coding skills are carp 
Contrary to what's written in other threads/places, the T91 and the heater communicate perfectly well.
T91 tells the heater to turn on, but the heater/car refuses the command until the telestart learns to ask more politely.
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| 11th May 2013 10:40 pm |
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Narpy
Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830
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What are the advantages of persevering with the T91 over the 1533 timer?? Mods:
Front Fogs + Halos
FBH Remote Control
The 1st Ever RRS Modded Grill
Garmin Nuvi + D4 Surround + Reversing Camera.
D4 Steering Wheel.
Rear Boot Spoiler.
Twin Brake Lights.
Wing Mirror Indicator Repeaters.
Long Roof Rails
Make your own Narpy grill thread
I'm not scared, I'm outta here.
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| 12th May 2013 6:52 am |
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allyv
Member Since: 11 May 2013
Location: reading
Posts: 46
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hi thanks, can get hold of a sdd pc if only software req??? if not how do i wire a 1553 to turn on /off with t91,
 ( reason to do this is glow plugs have all given up + siezed so if can get fbh working should over come problem on cold days .have read that 1553 was rec for russia by land rover on a tsb.
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| 12th May 2013 7:11 am |
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epninety
Member Since: 12 Oct 2012
Location: Hampshire
Posts: 329
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Narpy wrote:What are the advantages of persevering with the T91 over the 1533 timer??
Well you would get the 'two way' remote that tells you if the heater is running, and the T91 remote is quite small and neat, and you don't need to source an overpriced timer module that you don't need... but mainly in my case it's just that I started poking around to understand why it doesn't work out of the box
I have a small custom pcb that sits between the T91 interface and the heater, and translates the messages between the two.
It's not intended to be a commercial solution, just a simple software project to gain experience with the microcontroller I'm using (which I use in a few things in my work).
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| 12th May 2013 9:26 am |
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allyv
Member Since: 11 May 2013
Location: reading
Posts: 46
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just looked at wiring on 2010 rrs and all wiring is same as on d3 with w-bus from t91 into pin 2 0n fbh so WHY DOES THIS not turn on fbh on f3 ???? getting a sore head .
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| 20th May 2013 6:52 pm |
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Martin
Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18560
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2010 RRS is not the same as the D3, that's why  06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
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| 20th May 2013 6:58 pm |
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epninety
Member Since: 12 Oct 2012
Location: Hampshire
Posts: 329
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allyv wrote:just looked at wiring on 2010 rrs and all wiring is same as on d3 with w-bus from t91 into pin 2 0n fbh so WHY DOES THIS not turn on fbh on f3 ???? getting a sore head .
T91 does work, it's just that it doesn't do anything useful 
The FBH in the D3 won't turn on when commanded from a T91, but it understands the command perfectly, and responds with the correct response. It's not clear to me if the FBH itself is programmed to ignore the command, or if the car notices what's happening via CANBUS and turns it off again. I suspect it's the former, because of the lack of timer period negotiation from the remote (pressing both buttons doesn't allow the timer period to be set/changed).
The 1533 timer sends a slightly different command, which the heater will accept.
In an ideal world, I'd investigate if the firmware in the T91 receiver could be patched to change the default message, but there's a solidly fixed screening can preventing me getting a good look at the PCB and I'm not inclined to rip it off a perfectly good receiver unit without good reason.
I have a small microcontroller board thats intended to sit between the T91 and the FBH, effectively pretending to be a 1533 timer. The hardware all works, just haven't finished up my software for it yet.
I'll share more details if/when I get it working.
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| 20th May 2013 8:15 pm |
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allyv
Member Since: 11 May 2013
Location: reading
Posts: 46
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Martin wrote:2010 RRS is not the same as the D3 , that's why
Last edited by allyv on 21st May 2013 5:33 pm. Edited 1 time in total
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| 21st May 2013 4:54 pm |
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Martin
Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18560
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2009 and earlier is, 2010-2013 are D4-like 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
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| 21st May 2013 4:59 pm |
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