Air suspension inactive HDC inactive brake ABS fault - Page 3
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Thread: Air suspension inactive HDC inactive brake ABS fault

  1. #31
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    Re: Air suspension inactive HDC inactive brake ABS fault

    The new version, You can open a new window to code it. It says "...Code..."
    ______________
    Range Rover
    L322 4.4 2003
    Ex-P38A 4.0 1997
    Ex-R.R.C. 3.9 1994

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  3. #32
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    Re: Air suspension inactive HDC inactive brake ABS fault

    Quote Originally Posted by ddillenger View Post
    First with INPA, then with All-comms. All-comms shows the orientation of the sensor, and tracks it's movement via a graph so you can check for deadspots and verify full range in both directions. Mine showed it was off center approximately 60 degrees causing EAS faults.
    Hi there, I finally got the new SAS, I installed it today with no real problems. Now I'm able to see the movement using All-comms. I have one question. Are the numbers on the left, in the middle, are they supposed to be 1 when the steering wheel is centered? Mine is like -30120, when I bring the number to 1 by turning the steering wheel, its like 1/4 of a turn off center!
    ______________
    Range Rover
    L322 4.4 2003
    Ex-P38A 4.0 1997
    Ex-R.R.C. 3.9 1994

  4. #33
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    Re: Air suspension inactive HDC inactive brake ABS fault

    Quote Originally Posted by Zubi View Post
    Hi there, I finally got the new SAS, I installed it today with no real problems. Now I'm able to see the movement using All-comms. I have one question. Are the numbers on the left, in the middle, are they supposed to be 1 when the steering wheel is centered? Mine is like -30120, when I bring the number to 1 by turning the steering wheel, its like 1/4 of a turn off center!
    Yep. It should be near 0. I think mine is 161 right now, or about 2 degrees off.

    The sensor can only go on one way, but the indexing ring that locks into the sensor can be moved independently. I ended up removing/re-installing that **** sensor several times before I got it right. That's why a new one is preferred, it doesn't HAVE to go on the exact way, when it's coded that sets the limits :P

    Such a nightmare.

    Although, I guess now I'd try the CODE button. That seems like it'll reset the limits and relearn the sensor position. Not sure if it works on used sensors, but give it a shot!

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  6. #34
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    Re: Air suspension inactive HDC inactive brake ABS fault

    Well, I tried coding it but the %%$#@ lights are still on and when reading, using All-comms, the ABS codes I get a "SAS initialization". I just might have to take it to a dealer to get it initialized! Thanks for your help!
    ______________
    Range Rover
    L322 4.4 2003
    Ex-P38A 4.0 1997
    Ex-R.R.C. 3.9 1994

  7. #35
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    Re: Air suspension inactive HDC inactive brake ABS fault

    Quote Originally Posted by ddillenger View Post
    First with INPA, then with All-comms. All-comms shows the orientation of the sensor, and tracks it's movement via a graph so you can check for deadspots and verify full range in both directions. Mine showed it was off center approximately 60 degrees causing EAS faults.
    I have the All-comms, I can't find where I can track this movement via graph, what option is that under on All-comms. I'm having this same issue, I had the whole column out fixing the dreaded key won't start issue, was a dirty soleniod switch, fixed the problem.. My steering wheel is straight when my wheels are straight, I do get a steering angle error, I can reset all the lights and error codes, but drive for a few minutes they all return. I still have to try the turn wheel full left and full right with all comms connected, just trying to get this error gone so I can sell this beast....

  8. #36
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    Re: Air suspension inactive HDC inactive brake ABS fault

    When you open All-comms use the last option on the drop down menu "Live data" , you'll see it there
    ______________
    Range Rover
    L322 4.4 2003
    Ex-P38A 4.0 1997
    Ex-R.R.C. 3.9 1994

  9. #37
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    Quote Originally Posted by sh4dow View Post
    I've found 1 'tried & tested' solution.... 1 of many I think. Air Suspension/HDC Inactive, Brake and ABS lights on, suspension locked in central position (no motorway height setting)... Firstly may I say - this forum is great! Whenever logic lets me down I turn to this site for answers. There's lots of reasons discussed here as to why this set of warning lights etc appear - here's what I've personally discovered. I recently did some work on the front end and as a result the front wheel alignment (tracking) was left considerably 'off'.... so I got underneath the front end and twisted away at the adjustments until I had both wheels 'dead-square' pointing forward. I then realised that the steering wheel was at about the 2 O'clock (off centre) so I whipped off the steering wheel and re-centred it. Not realising the significance of this - the symptoms everyone is discussing on here appeared over the next few days. Turns out... the steering column sensor is sending info which does not match info from the wheel speed sensors /ABS sensors... so when the car is driving in a straight line / the wheels all report equal revolutions - however... the steering sensor is asking 'How can this be, as the car is turning a corner? Today I came back to this thread - thought carefully about recent work on the car - and went back to the tracking where (with a piece of paper and a pen) measured the amount of thread showing on each front side tracking arm.... one side was showing 10mm more thread than the other... the steering setup was 'really' off-centre! Using the simple 'paper & pen' method to measure each side, I made very even and precise adjustments 'Left wheel in / Right wheel out' respectively until the same amount of thread was showing on each side... jumped in car... drove down the road... onto motorway... 15miles later and ALL WARNING LIGHTS have disappeared & have not returned. All that remains is to remove steering wheel again and re-centre again (I'll do it in the morning). Before anyone splashes out any new parts for their RR I strongly suggest your think about recent work to the front end... "has the tracking been touched recently by anyone?" If so - this may be the cause of all these alarming warning lights / error codes and so on... I recognise what an idiot I was for tampering with the steering wheel alignment as part of setting the tracking... but I also congratulate myself for working out what an idiot I've been and rectifying my errors
    i was wondering some more info on the method u use to fix it

  10. #38
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    Re: Air suspension inactive HDC inactive brake ABS fault

    I have had the same message re HDC inactive air suspension not working as well as a load of orange lights illuminated on the dash.
    Auto logic computer reported various faults including "Front Left wheel speed sensor plausibility"

    On removing the wheel I found the ABS wire rubbing the disk creating an intermittent earth as the cable insulation was worn through. Checked the wire not cut and then taped over the visible wire and held the sensor cable in place with zip ties.

    This fault had been appearing intermittently and disappeared if the vehicle was switched off and the key removed.

    Will advise on if this fixes this issue.

  11. #39
    FRESHMAN ROVER LRR_HSE's Avatar
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    Re: Air suspension inactive HDC inactive brake ABS fault

    Quote Originally Posted by Tim Tennant View Post
    Will advise on if this fixes this issue.
    Any luck with this?
    I have the same problem Error codes: HDC, Brake, DSC, Air Suspension Inactive, Trans Prog,.

  12. #40
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    Re: Air suspension inactive HDC inactive brake ABS fault

    Could this impact the functionality of the abs brakes? I had the air suspension switched on out for springs & since am experiencing abs faults & actual abs malfunctions a few times. Each time is when I've just started truck, am pulling out of gravel drive while turning. Prior to suspension replacement there were no abs issues. It's very scary when the brake pedal locks and luckily it's only occurred at very low speeds. The mechanic that did the conversion is worthless or just dodging responsibility. New mechanic says all sensors are alerting when scanned. Thought I would ask on her prior to being scammed by another matcha IC. I hope I can resolve. I love my old RR. 1997 HSe (60,000 m)

  13. #41
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    Re: Air suspension inactive HDC inactive brake ABS fault

    Hi, I have just joined as have similar issues with my 04 4.4 L322. Intermittent Brake lights/ABS/Suspension inactive, brakes pulsing on while driving, prior to warning lights coming on.
    Garage charged my £700 and advised changing ABS ECU - duly replaced with a recon unit but same fault reappeared straight away.
    Have had wheels aligned, new tyres on front, changed Yaw sensor, measured ride height at all 3 levels (which seems consistent across fronts and rears).
    The air suspension pump seems to be struggling, as although the suspension moves between levels fairly quickly, the cabin switch takes a long time to extinguish. Have ordered recon kit/seals for compressor.
    The warning lights now come on when I start first thing in the morning and stays on as I drive, but the brakes no longer pulse on. But after stopping the car after a short run, the lights stay off the second and subsequent times that I start the car and remain off throughout the day - only to come on again the next morning.
    I have no idea what to do. Does any one have any ideas please?
    M

  14. #42
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    Re: Air suspension inactive HDC inactive brake ABS fault

    Had this problem on my 2006 L322. Initially replaced the battery with no success. Turned out to be a faulty ignition switch causing intermittent contact to accessory power.

  15. #43
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    Re: Air suspension inactive HDC inactive brake ABS fault

    I disconnected the battery to work on audio and after connecting the battery back on, i see the exact same error as many have posted here. Prior to me disconnecting the battery, everything was fine....not sure what to do at this point?
    1991 Range Rover SWB
    2003 Range Rover G4
    2016 Land Rover LR4 Landmark

  16. #44
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    Re: Air suspension inactive HDC inactive brake ABS fault

    Quote Originally Posted by lr4tq View Post
    I disconnected the battery to work on audio and after connecting the battery back on, i see the exact same error as many have posted here. Prior to me disconnecting the battery, everything was fine....not sure what to do at this point?
    turn the steering wheel lock to lock.

  17. #45
    FRESHMAN ROVER mjrgroup's Avatar
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    Re: Air suspension inactive HDC inactive brake ABS fault

    I had this issue on Rover 1 twice. First time was 4 years ago...replaced with a brand new Steering Angle Sensor (SAS) and it fixed the issue. 6 Months ago that SAS failed with the exact same symptoms...replaced it again with a brand new SAS and problem solved. I understand the failure symptoms but what is the failure mode? What is causing these SAS sensors to go bad?
    MJR
    2004 Range Rovers, HSE (L322, M62TUB V8 4.4L)
    Rover 1: Java Black,
    Sand Interior, Piano Black Custom Trim, Heated Steering Wheel and Heated Comfort Seats Retrofit, Factory Front Brush Guard and Fixed Side Steps
    Rover 2: Java Black, Charcoal Interior, Piano Black Custom Trim, Tow Package, Heated Steering Wheel Retrofit
    North American Spec

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