OBC switch on back...

Post Wed Aug 24, 2005 8:28 am

I'm curious, does anyone know what the rotary switch on the back of the OBC is for?? marked 30, 60, CH60, CH30

is it for if you have an extended fuel tank or something????

Post Thu Aug 25, 2005 9:47 am

boing

Post Thu Aug 25, 2005 6:55 pm

for testing at the factory maybe?

Post Thu Dec 01, 2005 3:05 pm

Bump! I was wondering the same thing!

Post Thu Dec 01, 2005 3:35 pm

Is it not for changing from metric/imperial - US/UK/European... C-F. Mph - Kmph

Post Thu Dec 01, 2005 3:42 pm

kam-325i wrote:Is it not for changing from metric/imperial - US/UK/European... C-F. Mph - Kmph

You can do that using the controls on the front, so I doubt it...

Would be great if it let me use degC and MPH!

Post Thu Dec 01, 2005 7:07 pm

is it for if you have a extended range fuel tank maybe? or can you get a different plug in module for that???

Post Thu Dec 01, 2005 8:47 pm

I only have some clues from an american website...

one guy said his OLD one had 12hF, 12hC, 24hC on the back, but was that actually a 13 button OBC? He doesn't say clearly.

Another yank said
'As for the rotary switch on back... I don't know what the numbers 30 and 60 stand for but the positions with CH on them enable the chime so that if the temp goes below 36 degrees or you exceed the max speed, you will hear the chime go off to alert you.'

so it could be the chime temperature? And maybe the other two with just 30 and 60 mean that there is NO chime if the OBC is on those settings

Who wants to get their OBC out and test my theories?

not me.....

Post Thu Dec 01, 2005 11:39 pm

Only fitted mine yesterday (1h30 for the whole thing from start to finish

), but it's got to come back out - I swapped the display bulbs but the button one's dead too! & I can't find a way of pulling the bulb out with the obc still in the dash...
So yeah, I'll be able to have a fiddle!

Post Thu Dec 01, 2005 11:42 pm

Ziggy wrote:Only fitted mine yesterday (1h30 for the whole thing from start to finish ), but it's got to come back out - I swapped the display bulbs but the button one's dead too! & I can't find a way of pulling the bulb out with the obc still in the dash...
So yeah, I'll be able to have a fiddle!

Jon, i've got a spare back light lamp if you want one. I'll bring it with me in the morning if you wish....

Post Thu Dec 01, 2005 11:47 pm

sorry to but in guys,but can an OBC be fitted into an is and work all the functions?
Getting scrapper with one in soon and wouldnt mind it in mine!

Post Thu Dec 01, 2005 11:48 pm

Cheers mate... think they're the same as the analogue clock / instrument cluster though ain't they? In which case I've got looooooads!

Post Thu Dec 01, 2005 11:52 pm

eko wrote:sorry to but in guys,but can an OBC be fitted into an is and work all the functions?
Getting scrapper with one in soon and wouldnt mind it in mine!

Retro fitted one into my iS, all works apart from the 'code' immobiliser (Which is cr@p anyway...)

Jon, yeah i think the lamp is the same as the instrument cluster, raining too hard to go outside to the garage to check. I'll have a look in the morning if i remember...

Post Thu Dec 01, 2005 11:56 pm

good looks like im having OBC then

Thanks Mark

Post Thu Dec 01, 2005 11:56 pm

E30Mark wrote: Retro fitted one into my iS, all works apart from the 'code' immobiliser (Which is cr@p anyway...)

Jon, yeah i think the lamp is the same as the instrument cluster, raining too hard to go outside to the garage to check. I'll have a look in the morning if i remember...

Don't worry about it - I'm pretty sure they're the same & I'm not gonna be doing anything about it 'til after the weekend anyway - away from tomorrow afternoon.... Sadly this means you'll have to wait a bit longer to see my new exhaust on the car, but I'm sure you'll cope!

& re the immobiliser; I didn't even bother trying to fit it. That means you don't need the horn or control box, & don't have to fiddle around with the connections behind the glovebox (apart from connecting the temp sensor loom to the main obc loom). P1$$ easy!

Post Fri Dec 02, 2005 12:03 am

& re the immobiliser; I didn't even bother trying to fit it. That means you don't need the horn or control box, & don't have to fiddle around with the connections behind the glovebox (apart from connecting the temp sensor loom to the main obc loom). P1$$ easy!

Will i have to connect it on mine,or will it not be much more work?
Also i take it that all the connections etc are the same regardless of model.Mines 318is and donor is 320iSE

Post Fri Dec 02, 2005 12:29 am

It's all in the tech articles section...

The immobiliser (code) function is pretty much useless anyway (assuming you've got some other form of security), so there's no real point in connecting it. That means it's just the plug on the back of the instrument cluster, the indicator stalk, the gong and the temp sensor that you've got to fit - nowt complicated

& yep, I'm pretty certain there's no difference between models... apart from the coding chip for the milage / range calcuations. They'll probably be even less accurate for you!

Post Fri Dec 02, 2005 12:31 am

thanks ziggy,will read a bit more over the weekend!

Post Wed Dec 07, 2005 7:06 pm

any news on the CH settings?

Post Wed Dec 07, 2005 7:16 pm

on my old IS, the gong was connected and didnt work

today i installed the same OBC, without touching the back of the obc or any dials etc, and it worked. so im not sure it that little knob does anything

it mite be for coding plugs

Post Wed Dec 07, 2005 8:17 pm

there are many things in this life that I believe, but I don't believe BMW spent money for no reason....