Actibe backrest
#1
Senior Members
Thread Starter
Join Date: Oct 2009
Location: Indiana, USA
Posts: 1,380
Likes: 0
Received 3 Likes
on
3 Posts
My Ride: 2007 530xi: Sport, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, HD Radio, SAT, Custom NCS coded options 2008 535xi: Sport, Night Vision, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, SAT, Custom NCS coded options, Rear Seat Heat Retrofit, Passport 9500ci
Model Year: 2008
Engine: N54
![Default](https://5series.net/forums/images/icons/icon1.gif)
Been doing some searching. It looks like Active Backrest was only an option on the M cars. It that correct?
#2
Senior Members
Join Date: Nov 2009
Location: Toronto, Canada
Posts: 521
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2012 535i X-driveSpace Grey/Black Dakota, Fineline Anthracite Trim; Executive Package (Rear View, Lumbar, Nav, Voice, SIRIUS, HiFi Pro) Technology Package (Hi Beam Assist, Lane Departure, Blind Spot Detection, Surround View) BMW Apps (Apps, Smart Pho
Model Year: 2012
![Default](https://5series.net/forums/images/icons/icon1.gif)
In my 08/09 brochure (Canada) seat options or standard are: "Active seat ventilation for drivers and front passenger" and "Comfort seats for driver and front passenger" which includes a two-part seat-back with electric adjustments, lumbar support and side bolsters. There are also optional "Sport seats for driver and front passenger"
If you are referring to other types of seats then the answer would be Yes, they are only on M cars.
If you are referring to other types of seats then the answer would be Yes, they are only on M cars.
#3
Senior Members
Thread Starter
Join Date: Oct 2009
Location: Indiana, USA
Posts: 1,380
Likes: 0
Received 3 Likes
on
3 Posts
My Ride: 2007 530xi: Sport, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, HD Radio, SAT, Custom NCS coded options 2008 535xi: Sport, Night Vision, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, SAT, Custom NCS coded options, Rear Seat Heat Retrofit, Passport 9500ci
Model Year: 2008
Engine: N54
![Default](https://5series.net/forums/images/icons/icon1.gif)
In my 08/09 brochure (Canada) seat options or standard are: "Active seat ventilation for drivers and front passenger" and "Comfort seats for driver and front passenger" which includes a two-part seat-back with electric adjustments, lumbar support and side bolsters. There are also optional "Sport seats for driver and front passenger"
If you are referring to other types of seats then the answer would be Yes, they are only on M cars.
If you are referring to other types of seats then the answer would be Yes, they are only on M cars.
#4
Contributors
Join Date: May 2009
Location: SoCal
Posts: 10,496
Likes: 0
Received 2 Likes
on
2 Posts
My Ride: 2008 550I LOADED, all options except HUD and NV
![Default](https://5series.net/forums/images/icons/icon1.gif)
Yes, the Active Side Bolsters are only on the M5 and even then they are optional. Not all m5's have this. That said, I don't understand why they all don't have it, even if it's not a standard feature, if you're spending $100k on a car you want to skimp on options?
Luckily, I haven't seen one that wasn't loaded, but I know they exist.
![Nono](https://5series.net/forums/images/smilies/imported/nono.gif)
#5
Senior Members
Thread Starter
Join Date: Oct 2009
Location: Indiana, USA
Posts: 1,380
Likes: 0
Received 3 Likes
on
3 Posts
My Ride: 2007 530xi: Sport, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, HD Radio, SAT, Custom NCS coded options 2008 535xi: Sport, Night Vision, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, SAT, Custom NCS coded options, Rear Seat Heat Retrofit, Passport 9500ci
Model Year: 2008
Engine: N54
![Default](https://5series.net/forums/images/icons/icon1.gif)
Yes, the Active Side Bolsters are only on the M5 and even then they are optional. Not all m5's have this. That said, I don't understand why they all don't have it, even if it's not a standard feature, if you're spending $100k on a car you want to skimp on options?
Luckily, I haven't seen one that wasn't loaded, but I know they exist.
![Nono](https://5series.net/forums/images/smilies/imported/nono.gif)
I did a quick look and first impressions are that a retrofit may not be too crazy. My current seats are the sport seats on an LCI that have the manual side bolsters. A look on realoem shows a different motor (not sure why it would take a different motor - perhaps something more responsive/faster?) Maybe the motors, a controller module of some sort, and the buttons. It would be OK to skip the buttons and use only the idrive settings if that would be possible.
![Question](https://5series.net/forums/images/smilies/imported/question.png)
#6
Contributors
Join Date: May 2009
Location: SoCal
Posts: 10,496
Likes: 0
Received 2 Likes
on
2 Posts
My Ride: 2008 550I LOADED, all options except HUD and NV
![Default](https://5series.net/forums/images/icons/icon1.gif)
I did a quick look and first impressions are that a retrofit may not be too crazy. My current seats are the sport seats on an LCI that have the manual side bolsters. A look on realoem shows a different motor (not sure why it would take a different motor - perhaps something more responsive/faster?) Maybe the motors, a controller module of some sort, and the buttons. It would be OK to skip the buttons and use only the idrive settings if that would be possible.
Can you fix my typo in the title?
![Question](https://5series.net/forums/images/smilies/imported/question.png)
I would think it would take a MINIMUM a new motor, before attempting you should try to take a ride in a car with them. They are amazing, and the response is immediate and differs depending on the turn. It will start gentle and increase as the turn becomes more severe. They really work well at keeping you planted as you take the car through the twisties. So I suspect, new seats plus whatever wiring is needed and probably a module to control it (if the module is not part of the seats already) - if you can do it you're amazing, please post a DIY if you can.
![Thumbsup](https://5series.net/forums/images/smilies/imported/thumbsup.gif)
#7
Senior Members
Thread Starter
Join Date: Oct 2009
Location: Indiana, USA
Posts: 1,380
Likes: 0
Received 3 Likes
on
3 Posts
My Ride: 2007 530xi: Sport, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, HD Radio, SAT, Custom NCS coded options 2008 535xi: Sport, Night Vision, NAV, PDC, HUD, Cold Wthr, CA, Logic 7, SAT, Custom NCS coded options, Rear Seat Heat Retrofit, Passport 9500ci
Model Year: 2008
Engine: N54
![Default](https://5series.net/forums/images/icons/icon1.gif)
Unless I am missreading, according to realoem, the motors are the same.
From looking at the M5 parts
*****************************************
For vehicles with
M multifunction seat
S4MAA=Yes
13 Width adjustment, active, left 1 52107919697 $135.69
13 Width adjustment, active, right 1 52107919698 $135.69
************************************************** **********************
For the E60
************************************************** **********************
For vehicles with
Comfort seat with memory
S456A=Yes
13 Width adjustment, active, left 1 52107919697 $135.69
13 Width adjustment, active, right 1 52107919698 $135.69
And this is the backrest frame for the E60 that says it works for Active Backrest
For vehicles with
Active backrest width adjustment
or
Comfort seat with memory
Crash-active
S4MFA=Yes
S456A=Yes
01 Backrest frame, comfort seat 2 09/2007 52109154995 $1,109
************************************************** ********************************
The Active Backrest Width Controller is only $151 PN: 61356938911
It seems much too "simple" at this point but it appears the only thing missing is the controller. From the wire diagram, it seems all the motion sensors are built into the controller so no fancy integration into other car modules other than the usual CAN connections and switches.
From looking at the M5 parts
*****************************************
For vehicles with
M multifunction seat
S4MAA=Yes
13 Width adjustment, active, left 1 52107919697 $135.69
13 Width adjustment, active, right 1 52107919698 $135.69
************************************************** **********************
For the E60
************************************************** **********************
For vehicles with
Comfort seat with memory
S456A=Yes
13 Width adjustment, active, left 1 52107919697 $135.69
13 Width adjustment, active, right 1 52107919698 $135.69
And this is the backrest frame for the E60 that says it works for Active Backrest
For vehicles with
Active backrest width adjustment
or
Comfort seat with memory
Crash-active
S4MFA=Yes
S456A=Yes
01 Backrest frame, comfort seat 2 09/2007 52109154995 $1,109
************************************************** ********************************
The Active Backrest Width Controller is only $151 PN: 61356938911
It seems much too "simple" at this point but it appears the only thing missing is the controller. From the wire diagram, it seems all the motion sensors are built into the controller so no fancy integration into other car modules other than the usual CAN connections and switches.
Thread
Thread Starter
Forum
Replies
Last Post