Pre-wired question

Traxxer

Member
 Los Angeles
Would anyone happen to know if a z4 without power heated seats is already prewired for that kind of setup if I planned on upgrading my seats? I checked under my seats and found some wiring/plug.

seat_plug.jpg
 
My guess having just finished building my seats is that not it's not pre wired

If you look on the panel in front of the ashtray you would have 2 switches built in to control the 3 settings of each seat. If not there then there is little cnhance it's ready, however to be sure I'd fish that panel out and see if terminals lie behind it.

The plug under the seat is a multi part assembly and contains sections as required specific to each car - passenger sensor, seatbelt fastened, heated seats electic motors. It's rather neat as it groups all the individual looms together into a single plug. Therefore all will have regardless of what your wired for. What you could check is for wiring going in from the loom, but not used on the seat side of the plug (if you follow)

BTW - don't unclip it with the ignition on else you trip the airbag warning light and need to get it reset. :thumbsdown:
 
You need to order the wireloom + new switches. We started working on a project on that for K2 and checked all that was needed. Compared to my car, the wiring was missing.
 
cj10jeeper said:
My guess having just finished building my seats is that not it's not pre wired

If you look on the panel in front of the ashtray you would have 2 switches built in to control the 3 settings of each seat.

I was under the impression that only the driver seat had the 3 memory settings. In any case, I'll check to see which wires in the plug are actually being used. I'm thinking maybe the seat motor and the heated seats will work.
 
cj10jeeper said:
inTgr8r said:
Anything on a yellow plug is related to safety/airbag cct.


Not true - it also drives the heated seat pads. It's the only connection point.
I didn't mean exclusive.... "related".
It can have additional ccts
If it has any safety/airbag cct it will be yellow = disconnect battery first.
 
inTgr8r said:
cj10jeeper said:
inTgr8r said:
Anything on a yellow plug is related to safety/airbag cct.


Not true - it also drives the heated seat pads. It's the only connection point.
I didn't mean exclusive.... "related".
It can have additional ccts
If it has any safety/airbag cct it will be yellow = disconnect battery first.

OK - I read it in a different way but certainly agree on disconnecting the battery

Traxxer - I referred to 3 heat settings on each seat, which you see on the switch panel. The memory function is of course also 3 settings but only on the drivers seat and those controls are on the seat itself.
 
cj10jeeper said:
OK - I read it in a different way but certainly agree on disconnecting the battery
LOL...Sometimes I mean what I write & sometimes, I write what I mean.
...trouble is I never know which time is which..... if you follow :rofl:
 
cj10jeeper, on your seats, are their more plugs then the one I have? I'm thinking the only thing I won't be able to do is set the heat on the seats via he panel in front of the ashtray. If I remember correctly the seats have the buttons on the side.
 
Traxxer said:
cj10jeeper, on your seats, are their more plugs then the one I have? I'm thinking the only thing I won't be able to do is set the heat on the seats via he panel in front of the ashtray. If I remember correctly the seats have the buttons on the side.

Traxxer

I confess now to becoming more confused about your upgrade so let me step back and restate and see if it helps

There is just one loom and plug out of the floor that connects to the yellow socket you have on the seat

On the drivers side the seat side of the socket groups together any of the following you have:
Power input to the memory seats - all it's switches motors, looms being built to the seat
3 heated seat pad
airbag /seat tensioner controls

Passenger side
The same as drivers but a small control box to detect a passenger in the seat (and therefore airbags, seatbelts warning, tensioners, etc.)

I never took photos specific to this when I built mine but the 3 below may help you visualise without the need to pull the seat out:

Manual seat showing the looms grouped into the socket (note rear cover of socket is removed)
DSCN2428.jpg



Manual seat frame with just the seatbelt loom connected
DSCN2430.jpg


Powered memory seat frame with motor looms and seatbelt looms disconnected
DSCN2429.jpg


If you count the wires in your loom where it comes out the carpet and tell me the colours I can look at mine and see if you are missing any compared to mine. If not then it's easy as you just have to sort the dash heating switches

Hope this helps
 
Again all good stuff. Sorry for dragging up old old threads but this stuff really is very useful :)
 
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