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High beam assist - how is it supposed wok?
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pfermer
 


Member Since: 23 Mar 2013
Location: Oxfordshire
Posts: 44

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Stornoway GreyDiscovery 4
High beam assist - how is it supposed wok?

Hi,

I have a 2010 XS, and bought new old stock high beam assist mirror, I have now put it on, enabled it with the iid tool, and activated on the dashboard. When the light knob is in auto, the green auto dashboard light shows but as soon as I start the car it disappears, but I can’t get it to automatically turn high beam on. Should the auto green light on the dash stay on? What else might be causing it not to work (other than a faulty unit!) the ambient light sensor seems to be working as it turns the lights on and off ok.

Any help or thoughts appreciated. I have also attached a pic of the plug I have in case the wiring loom is missing wires to be able to enable!

Thanks.



  
Post #202736310th Feb 2019 10:59 pm
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
Posts: 48917

United Kingdom 

Not sure it only requires an ambient light sensor??? Don't you have to have a Image Processing Module (IPMA) camera for it to work? Confused
  
Post #202736510th Feb 2019 11:27 pm
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adam
 


Member Since: 20 Sep 2005
Location: Home and Happy
Posts: 6838

United Kingdom 

I vaguely remember it’s activated in the menu - I turned it on when I got mine and never turned it off, some folks thought it rubbish, always worked for me. I think DG is correct in the fact it needs the additional piece of hardware.
 Now Golf GTI PP, 7 speed DSG.
Ex D3 and D4 
 
Post #202736810th Feb 2019 11:42 pm
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Gilly1
 


Member Since: 09 Sep 2015
Location: Somerset burnham on sea
Posts: 356

England 2015 Discovery 4 3.0 SDV6 SE Tech Auto Fuji WhiteDiscovery 4

Hi, just a thought, have you got main lights on auto.
 2015MY discovery 4 se tech with factory black pack.
With added
Rse, tv, electric memory seats, rear camera, heated steering wheel,
Headlight dip assist, remote FBH, led door light pack,easy lift kit,osram front fog/drl/active cornering lights. and whatever els I can find to do, 
 
Post #202737110th Feb 2019 11:55 pm
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pfermer
 


Member Since: 23 Mar 2013
Location: Oxfordshire
Posts: 44

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Stornoway GreyDiscovery 4

Hi, yes have main lights on auto and driving above 25mph, and yes have the thing that looks a bit like a camera.


  
Post #202737210th Feb 2019 11:56 pm
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
Posts: 48917

United Kingdom 

You might be right on older systems

Quote:
High Beam Assist Operation

The high beam assist operates as part of the automatic headlight system. When driving at night with the lighting control switch in the automatic position and the left steering column multifunction switch in the central position, with sufficient darkness (approximately 1 lux or less) and a suitable road speed, the high beam assist will automatically operate the high beam lighting when necessary. A warning symbol in the IC confirms to the driver when the high beam assist system is selected and enabled.

NOTES:

noteThe function of the normal 'blue' high beam indicator remains unchanged and it always reflects the actual status of the high beam lamps

noteThe exterior lighting 'on' threshold for the auto headlamps system is approximately 100 lux which is measured by the rain/light sensor. At light levels below this value the low beam headlamps and exterior lights will be switched on. The high beam assist will not function until the light level has reached approximately 1 lux. At light levels above 1 lux high beam is not required and therefore is not activated.

Activation (system ready)

High beam assist will only activate and illuminate the warning indicator to show system is ready or 'primed' for high beam control, when the following conditions are met:

High beam assist has been first 'enabled' via the IC menu
Lighting control switch is in the 'Auto' position
Left steering column multifunction switch in the central position
The ambient light level is below 100 lux – refer to 'Light Levels' section that follows
The system has not been overridden or cancelled – refer to 'Override' section that follows
The camera (image) sensor view is not blocked.
High Beam Control

When activated, high beam assist will switch the headlamps to high beam when all the following conditions occur:

No relevant oncoming traffic
No relevant preceding traffic
In non-urban environment, i.e. with no street lighting
Ambient light level is below 1 lux – refer to 'Light Levels' section that follows
Road speed is suitable – refer to 'Road Speed' section that follows.
Low Beam Control

When activated, high beam assist will switch the headlamps to low beam when any of the following conditions occur:

Relevant Oncoming traffic is present
Relevant Preceding traffic is present
In urban environment, i.e. with street lighting
Ambient light level is above 1 lux – refer to 'Light Levels' section that follows
Road speed is not suitable – refer to 'Road Speed' section that follows
Unrecognisable reflective inputs from road signs or markings – refer to 'System Limitations' section that follows.
Light Levels

The exterior lighting 'on' threshold for the normal 'auto headlamps' feature is approximately 100 lux and is measured by the windscreen mounted 'rain/light' sensor. When the light level falls to this value the low beam headlamps and exterior lights will be switched on together with the high beam assist warning indicator.

This warns the driver that the system is activated and ready to automatically switch on the high beam headlamps when the light level falls a little further to approximately 1 lux, as measured by the 'ambient light sensor' located in the mirror body. High beam is generally not required with light levels above 1 lux.

Road Speed

A road speed signal is received by the CJB from the Anti-lock Braking System (ABS) module via the high speed CAN bus. When the other activation conditions are correct, the CJB will switch the headlamps to high beam when the road speed has increased above 40 km/h (25 mph).

When the road speed falls to below 24 km/h (15mph), the CJB will switch the headlamps to low beam. The 10 mph (15 km/h) difference between the on and off road speed thresholds prevents the system continually switching between high and low beam at low speeds.

Override

The driver can manually override the high beam assist system at any time. When the high beam assist system is activated, pulling the left steering column multifunction switch to the high beam 'flash' position or pushing it forward to the high beam position will de-activate the system and the high beam assist warning indicator in the IC will extinguish.

When the multifunction switch is returned to the central position, from a forward high beam position, the system is re-activated and the high beam assist warning indicator will illuminate again.

Correct Performance

In addition, high beam assist will only exhibit best performance if all of the following conditions are met:

No false inputs are received by the camera (image) sensor, such as reflected light from certain static signs – refer to 'System Limitations' section that follows
Headlamps are correctly aligned
High beam assist system has been set for correct 'hand of traffic' via the driver menu settings – refer to 'Setting Hand of Traffic' section that follows
Camera (image) sensor has been through a self learning 'auto aim' calibration procedure if any components have been replaced – refer to 'Calibration' section that follows
There are no large reflective items, white papers, etc., sitting on top of the dash board in near view of the camera (image) sensor, or stickers placed directly in front of the camera (image) sensor
Driver Menu Features

The high beam assist feature must first be enabled using the configuration menu available in the IC. However if required, the high beam assist system can be permanently disabled leaving the basic 'Auto Lamps' system still operative.

Within this menu the system can also be configured for driving on the alternate side of the road (Hand of Traffic). This enables the system to be used in different regions and it's setting is important for correct operation.

Setting 'Hand of Traffic' and High Beam Assist 'Enable'

To set the high beam assist options the following steps must be sequenced:

With the ignition in power mode 6 (ignition on), and the engine not running, use the controls on the steering wheel to select on the IC menu:
Menu > Vehicle Set-up > High Beam Assist
Configure the 'Hand of Traffic' setting by selecting the appropriate 'Drive on Left' (of road) or 'Drive on Right' (of road) to the applicable Market condition
Enable the feature by setting 'Activate Assist' if not already selected.
noteNOTE: Enabling or disabling high beam assist will not affect the ‘Hand of Traffic’ settings once set.

The IC menu also includes a 'High Beam Assist Sensitivity' selection. This is a requirement option for NAS market vehicles only but it is not recommended for normal use and has been superseded.

noteNOTE: In other markets the 'Sensitivity' selection is greyed out and cannot be selected.

For additional information, refer to: Instrument Cluster (413-01 Instrument Cluster, Description and Operation).

System Limitations

The high beam assist system can occasionally have difficulty distinguishing between light from other vehicles or reflected light from static highly reflective road signs.

These situations may cause the high beam assist system to undesirably operate the high beam headlamps or take no action at all. Examples of these situations are as follows:

Dips, hollows or crests in the road
Highly reflective static Road signs
Tight bends
Poorly illuminated vehicles e.g. cyclists or small mopeds
Motorway central barriers
Extreme weather conditions e.g. Fog, heavy snow
Exterior domestic or industrial lighting
Reflective Static Signs


1
-
Red reflective signs could be detected as rear tail lamps
2
-
Large reflective signs could affect the system
Manual Deactivation


Vehicle equipped with high beam assist
2
-
Oncoming vehicle headlamps can be seen by the driver before the high beam assist image sensor detects the oncoming light input
There are situations when a driver is able to judge if a high beam deactivation is desirable before the high beam assist system actually operates, for example over a crest of a hill. Headlamps from an oncoming vehicle can sometimes be seen on the horizon prior to the detection sensor receiving an input. It is the driver's preference to determine if early intervention is desired in this and similar situations.

System Diagnosis

noteNOTE: Windshield stickers, stone chips, dirt and general road film will affect the successful operation of the image sensor if sufficient blocking is present. Avoid placing reflective objects on the instrument panel, for example white paper which can affect the image sensor.

High beam assist has a self diagnosis capability by comparing data from the ambient light sensor input (located in the rear view mirror) to light levels detected by the image sensor. If a deviation is detected it is assumed that the ambient light available to the image sensor is being restricted by dirt or other blockage and the system will be deactivated. Diagnostic Trouble Code (DTC)'s are stored in the control module's memory and can be accessed using an approved Land Rover diagnostic system. Within the diagnostic system is a procedure to test the basic operation of the camera function.

In the event of a fault, the warning strategy to the driver is as follows:

Image sensor internal fault - green icon will extinguish with no additional message to driver
CJB has lost all communication with image sensor - green icon will extinguish with no additional message to driver
Image sensor blocked - green icon will extinguish with an additional "High Beam Assist Sensor Blocked" message within the message centre
System Calibration

To achieve effective operation of the high beam assist system, a calibration routine is performed on vehicle build and system tolerances are set to an accuracy of +/- 0.2 degrees.

This initial calibration is a 'one time only' procedure. Should the high beam assist components or the windshield require replacement at the dealership, an automatic calibration routine will be performed. This 'auto aim' calibration procedure is a continual process that takes place during a normal drive cycle at night and could take between 10 - 30 minutes dependant on the following driving conditions:

If sufficient road markings (lane markings) are visible to the image sensor - approximately 10 minutes
If insufficient road markings are visible, the system uses the tail lights of preceding vehicles - approximately 30 minutes.
NOTES:

noteUntil this calibration is complete the system may not react correctly during operation. This should be made clear to the customer before vehicle handover. During any calibration or rectification work the headlamps should be checked for correct alignment.

noteDue to mechanical calibration tolerance the correct mirror assembly must be used for the vehicle model types in question and it is not exchangeable with other vehicle model types.

noteAfter any rectification work and before any calibration drives, the headlamps should be checked for correct alignment.
 17 year veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018  
Post #202737411th Feb 2019 12:11 am
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LIAMMCL
 


Member Since: 27 Aug 2013
Location: Northumberland
Posts: 352

England 2009 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

Mine is turned off as it tends to blind oncoming traffic for a second before dipping. I like to dip my lights before the headlights appear round the corner, and your constantly second guessing what this HBA is going to do.
  
Post #202740811th Feb 2019 8:34 am
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pfermer
 


Member Since: 23 Mar 2013
Location: Oxfordshire
Posts: 44

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Stornoway GreyDiscovery 4

Just an update in case anyone else finds themselves in the same position.

I have now got it working, it seems the 2012 mirrors - which I tried two of, one new one 2nd hand are different to the 2010 ones. The markings on the mirror and plug colour are slightly different. Thought something was up when I happened to notice that when I put in reverse and the green auto light came on.

Anyway, the 2010 mirror works a treat (even if slightly a bit too tatty for my liking!)

Will be more careful about years of parts in the future!
  
Post #203853520th Mar 2019 12:27 am
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Ali1971
 


Member Since: 13 Jun 2016
Location: Dalgety Bay
Posts: 631

Scotland 2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

I have an auto darkened mirror for night time in my HSE 2012, can high beam assist be enabled or will it require come other hardware?
  
Post #203856620th Mar 2019 6:54 am
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pfermer
 


Member Since: 23 Mar 2013
Location: Oxfordshire
Posts: 44

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Stornoway GreyDiscovery 4

Hi,

You will need to change the mirror for one with a camera and then update the car configuration file using an IID tool or similar. Both are quick and easy to do.
  
Post #203867520th Mar 2019 2:51 pm
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Ali1971
 


Member Since: 13 Jun 2016
Location: Dalgety Bay
Posts: 631

Scotland 2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

ahh ok I see Thumbs Up
  
Post #203868220th Mar 2019 3:33 pm
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gigamozg
 


Member Since: 10 Feb 2019
Location: SPb
Posts: 1

Russia 2010 Discovery 4 5.0 V8 Base 7 Seat Auto Unknown ColourDiscovery 4

pfermer wrote:
Just an update in case anyone else finds themselves in the same position.

I have now got it working, it seems the 2012 mirrors - which I tried two of, one new one 2nd hand are different to the 2010 ones. The markings on the mirror and plug colour are slightly different. Thought something was up when I happened to notice that when I put in reverse and the green auto light came on.

Anyway, the 2010 mirror works a treat (even if slightly a bit too tatty for my liking!)

Will be more careful about years of parts in the future!

Hi pfermer,

Could you please tell how the correct auto high beam mirror for MY10 can be identified?
Is there any part number or something?
Many thx in advance!
  
Post #213350131st Mar 2020 7:39 pm
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M3bobby
 


Member Since: 21 May 2018
Location: Sleaford, LINCS.
Posts: 751

United Kingdom 

If you buy off eBay, check the part number as many sellers sell them fitting multiple cars just like the eBay listing posted above. Be aware that they can look the same but they aren’t. There is a bracket that the sensor fits to that adjusts the angle to match the windscreen angles etc. For example a 2012 Disco 4 mirror is identical to a 2012 RRS mirror except the little bracket, the RRS sensor is mounted a little higher than the Disco (only a few mm).
 012MY RRS 5.0 Supercharged Autobiography (Current)
Mods:
TPMS (Complete but got an issue)
Genuine LR DRLs (Complete)
Remote Boot close from key fob (Complete)
2016 Discovery 4 Mirrors AKA RRS2 (Complete)
2014 L405 Surround Camera retro fit (Now 2016 L319)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE (Complete)
2014 LR4 Homelink (Complete)
2016 FFRR Electrochromatic Wing Mirror Glass (Complete) 
 
Post #213354031st Mar 2020 9:27 pm
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pfermer
 


Member Since: 23 Mar 2013
Location: Oxfordshire
Posts: 44

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Stornoway GreyDiscovery 4

Hi, I assume the part numbers are different as the plug and wiring colours where different, I got a second hand one off a 2010 vehicle in the end.
  
Post #213355531st Mar 2020 11:50 pm
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M3bobby
 


Member Since: 21 May 2018
Location: Sleaford, LINCS.
Posts: 751

United Kingdom 

If the connectors fit but the colour is slightly different then it will be a variation in production only. If I remember correctly that plug only comes in grey or black and have different keyways. The 2009 on part number codes start AH for 2010MY BH for 2011MY, CH for 2012 and DH, EH on. There’s also CPLA,DPLA etc with the same idea. There’s about 20 different pt no’s per model for the interior mirror.

The reason one may work over another is down to the coding on the mirror chip. The 2012 would probably work on a 2010 if you could re-code the chip. A Disco 4 would likely work on a RRS if you re-coded it and change the sensor bracket.
 012MY RRS 5.0 Supercharged Autobiography (Current)
Mods:
TPMS (Complete but got an issue)
Genuine LR DRLs (Complete)
Remote Boot close from key fob (Complete)
2016 Discovery 4 Mirrors AKA RRS2 (Complete)
2014 L405 Surround Camera retro fit (Now 2016 L319)
2013 RRS Dual View Screen fit (Complete)
2016 LR4 RSE (Complete)
2014 LR4 Homelink (Complete)
2016 FFRR Electrochromatic Wing Mirror Glass (Complete) 
 
Post #21335591st Apr 2020 12:11 am
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