Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Arnott
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #21  
Old 06-01-2021, 01:09 PM
Member
 
Join Date: Jan 2020
Location: Calgary
Posts: 387
Bmwe5320023.0 is on a distinguished road
Looks like I definitely had a low battery. I really underestimated how fast the voltage drops with key on position "on"... I know connected to a 2 amp charger overnight and in the morning got the following results with the rear sensor disconnected


The previous explains why I had no voltage in the front or rear. If the battery is too low, those sensors won't have voltage.
Those two INPA errors appear interchangeably, I'm not sure why they change. I'm gonna scan the module, erase the first error, scan again, then the second error comes up.

Now I tried connecting new ride height modules to the rear to see what would happen.

The one weird thing that happened, as soon as I connected a rear module, I'd get around 5 volts on if, but the front sensor would show 0.
At some point both showed 5 volts, but that didn't last long

But soon thereafter, with the rear sensor connected, I'd only see voltage on the rear sensor.

What I really don't understand is why I lose voltage on the front if I connect the rear sensor.
Not sure if it's normal or not.

I'm suspecting there would be something wrong with the module.
When I first launch INPA and tried to scan the LRA module, it gave me some kind of an error. I closed INPA and tried to scan the module again, and it worked.

In ISTA, on this screen

Where it says "State: ON" it will be switching between "ON" and "OFF" multiple times.
I'm not sure if this is normal.

I'd appreciate if someone could at least scan their LRA module in INPA to see how the voltages display
Reply With Quote

Sponsored Links

  #22  
Old 06-01-2021, 02:02 PM
crystalworks's Avatar
Premier Member
 
Join Date: Jun 2014
Location: SA, TX
Posts: 5,711
crystalworks is on a distinguished road
When I was having issues with a sensor there was a re-initialization procedure that had to be done via INPA before everything started working as it should. I'm sorry I can't remember the exact procedure and in what module it was. But until doing that my sensor would read way out of range and my headlight leveling and aiming would not function on one headlight. My problem sensor was the left front.

Yours may be completely different however as yours is a pre-LCI and so uses different modules for the leveling in the headlights.
__________________
2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
Reply With Quote
  #23  
Old 06-01-2021, 04:11 PM
Member
 
Join Date: Jan 2020
Location: Calgary
Posts: 387
Bmwe5320023.0 is on a distinguished road
I definitely remember reading your thread about re-initializing, or a very similar thread.
I'm pretty sure it's different on LCI cars.
On pre LCI, there is only right front and right rear sensors responsible for headlight adjustment.
I also read through a few threads were people had issues with the sensors, replaced then and did not have to re-initialize.
Reply With Quote
  #24  
Old 06-01-2021, 04:34 PM
Member
 
Join Date: Jan 2013
Location: Finland
Posts: 779
Clavurion is on a distinguished road
Quote:
Originally Posted by crystalworks View Post
When I was having issues with a sensor there was a re-initialization procedure that had to be done via INPA before everything started working as it should. I'm sorry I can't remember the exact procedure and in what module it was. But until doing that my sensor would read way out of range and my headlight leveling and aiming would not function on one headlight. My problem sensor was the left front.

Yours may be completely different however as yours is a pre-LCI and so uses different modules for the leveling in the headlights.
Could it be that you are remembering some EHC2 initialisation? There shouldn't be any for headlight leveling.
__________________
E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
Reply With Quote
  #25  
Old 06-01-2021, 05:20 PM
crystalworks's Avatar
Premier Member
 
Join Date: Jun 2014
Location: SA, TX
Posts: 5,711
crystalworks is on a distinguished road
Quote:
Originally Posted by Clavurion View Post
Could it be that you are remembering some EHC2 initialisation? There shouldn't be any for headlight leveling.
It was during the deletion of ehc2 timeframe for sure. But my headlight leveling would not work, and my FL sensor (used and new) would not read correctly until whatever procedure was carried out. I know it was not in the ehc2 module though as I had deleted it already from the ZCS. I was attempting to diagnosis the non working LS headlight not leveling when I stumbled into it in inpa.
__________________
2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
Reply With Quote
  #26  
Old 06-01-2021, 05:24 PM
wpoll's Avatar
Member
 
Join Date: Sep 2015
Location: South Island, New Zealand
Posts: 3,836
wpoll will become famous soon enough
Quote:
Originally Posted by Bmwe5320023.0 View Post
On pre LCI, there is only right front and right rear sensors responsible for headlight adjustment.
LCI cars (with no air suspension) are the same - only sensors on FR and RR.
__________________
Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
Reply With Quote
  #27  
Old 06-01-2021, 09:30 PM
Member
 
Join Date: Jan 2020
Location: Calgary
Posts: 387
Bmwe5320023.0 is on a distinguished road
Ok I think I solved it guys.
It looks like it was an issue only with a sensor.
I scanned with INPA, opened the voltage page and again only had voltage on the front sensor.
I started to connect all the spare sensors I had.
I was also looking at my laptop screen at the same time.
It's funny how it works, but depending how you move that freaking sensor, it will change or not change voltage.
I found spots (in the air) where the sensor would change voltage. From 0 all the way to 4.568. Even if you move it ever so slightly, values will change. But in other spots in the air, you can move it all you want and it won't change values.
But of course as soon as I connected the rear sensor and it displayed voltage, the front sensor stopped displaying voltage.

I continued to fiddle around with the sensor, and at some point both voltages started to get displayed, front and read.

I closed INPA, opened ISTA and rescanned, and had no more errors, even though ISTA was also showing only 5 volts in the rear, not the front.

I left it alone, came back, rescanned with INPA, the front sensor is still frozen at 0.431 and the back voltage will change with moving the sensor around.
INPA shows an error again.

Deleted the error, rescanned, everything is fine.

Now the error could be coming back because the sensor is not at the right place.

A few things are for certain now.

Only 3 wires are responsible for the headlamps and are totally independent of the air suspension. No coding is required. Only 2 sensors, rear right and front right, are needed to for the headlights. I know this was said before but now there's 0 doubt.

I'm about to put everything back together and test again.
Too dumb again didn't take pictures when taking it apart...

I can't find anywhere on the internet how that sensor is supposed to attach lol
One way seems wrong, but the other way it bumps into the upper control arm
Reply With Quote
  #28  
Old 06-01-2021, 11:08 PM
wpoll's Avatar
Member
 
Join Date: Sep 2015
Location: South Island, New Zealand
Posts: 3,836
wpoll will become famous soon enough
The factory manual states...

Installation:
Ride-height sensor must be aligned to bracket so that sensor lever (4) points outwards after ride-height sensor has been installed.




After installation:
If necessary, bend bracket towards rear by A = 3 to 4 mm to avoid a collision between eccentric bolt and connection joining jointed rod to sensor lever


__________________
Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
Reply With Quote
  #29  
Old 06-02-2021, 01:22 AM
Member
 
Join Date: Jan 2020
Location: Calgary
Posts: 387
Bmwe5320023.0 is on a distinguished road
Thank you for these.
I bent it a bit and it looks better now.

Hopefully the issue is resolved now.
Would still be great if people posted their INPA screens for reference/comparison.
Reply With Quote
  #30  
Old 06-02-2021, 05:16 AM
Member
 
Join Date: Jan 2013
Location: Finland
Posts: 779
Clavurion is on a distinguished road
Quote:
Originally Posted by Bmwe5320023.0 View Post
Thank you for these.
I bent it a bit and it looks better now.

Hopefully the issue is resolved now.
Would still be great if people posted their INPA screens for reference/comparison.
Looks like the rear one is showing reasonable value now. What about the front sensor installation? It's value is too low to be normal position value.
__________________
E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 01:18 PM.
vBulletin, Copyright 2021, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.