LR2 Talk about the Land Rover LR2 within.

HDC Fault

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Old Dec 28, 2020 | 04:52 PM
  #11  
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I have to wonder what drunken British gynecologist designed circuits that make the car's panel look like a christmas tree on fire just because one or more bulbs burned out.
 
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Old Dec 28, 2020 | 08:01 PM
  #12  
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Odd how as soon as one bulb was replaced another burned out. Working fine last few days
 
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Old Dec 28, 2020 | 08:02 PM
  #13  
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Thats the LR3. LR2 runs great but still has light and faults
 
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Old Dec 29, 2020 | 09:28 AM
  #14  
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Originally Posted by flyer08
My LR3 did similar last week. Tracking that down through research, found usually battery, could be burned out light, ECU, brake switch, plus more. Seems to be a problem with many possibilities. I corrected my HDC Fault, Terrain Response Fault, ABS Fault, Brake Fault, all by replacing a couple light bulbs... Lucky I guess
Just for future reference, historically these errors have been solved by a ground/earth cable addition or replacement or a battery replacement, which bulbs did you replace to solve these message display errors?
 
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Old Dec 29, 2020 | 12:25 PM
  #15  
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first halogen headlight driver side
second rear tail light driver side
third rear brake light passenger side
fourth front running light clear lens driver side
fifth front running light amber lens driver side
six front running light clear lens passenger side
seventh front running light amber passenger side

Every bulb replaced was only bulb out. The fourth through sixth bulb replacement worked fine but another bulb blew upon first power on. Very frustrating to pull same headlight assembly out a second time to replace adjacent bulb. This happened on driver and passenger side front running lights. Replaced clear to find amber lens (same bulb type) now blown. Replaced clear then amber on front driver side to find a front clear running light now out on passenger side. Then of course, the amber light now needed replacing.

There is a cause and affect here, no doubt. Odds of lights going out in order are a billion to one. Did not use OEM, but bulbs from local parts store. Assume new bulb pulling or resisting slightly different causing aging bulb to blow.... Just theory, I am not an electrical expert.. But LR3 cleared all codes and shifts great..

Found a couple tail light out on LR2 showing HDC fault. Will be replacing those and brake light switch as these are cheap fixes but known to cause HDC and other faults
 
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Old Dec 29, 2020 | 12:31 PM
  #16  
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both batteries in LR2 and LR3 are approx. a year old and tested.... batteries good
 
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Old Dec 29, 2020 | 02:49 PM
  #17  
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If you have lights regularly blowing that would indicate a short somewhere maybe related to vibration or moisture; I'd recommend locating and inspecting the grounds that relate to the light modules that are causing you issues. Also, have you checked your electrical system for parasitic draw as that also causes the various ECUs to slowly lose power and cause many fault codes?

Location of grounds for a 2008 LR2:

 
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Old Dec 29, 2020 | 04:13 PM
  #18  
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No I have not. My LR3 had multiple faults, HDC fault, and would not auto shift. Replacing bulbs seem to of sorted that. LR3 is what blowing bulbs as new ones were installed

My wife's 2011 LR2 has HDC fault. Just found a rear running light out yesterday. Day before the LR2 high center brake light was out and found it had melted its socket. I unplugged light socket and removed.... Trying to find replacement now without luck. Don't know if related to HDC fault or not. The HDC fault was long before these bulbs blew. Related, don't know. The high center light melting socket may imply a short. I will e running a multi meter later

Let me know where I can get a replacement socket.
 
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Old Dec 29, 2020 | 07:33 PM
  #19  
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Originally Posted by ThorInc
Location of grounds for a 2008 LR2:
Oh, is that all?? Sheeit. Let me get my meter and a bottle of Jack Daniels. LOL!
 
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Old Dec 29, 2020 | 09:24 PM
  #20  
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JD not a bad thought...lol
Do enjoy learning. But in the words of 70s Dirty Harry, 'A man has to know his limitations'
 
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