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Dirtydthedefender

New Member

• Today at 12:44

• #1

Hello, I have a 2007 Discovery 3 HSE 2.7 TDV6. Recently, when I come to the car, the battery voltage is at 14.6V. When I start the car, everything is normal and the air suspension goes up fine. However, while driving, I get a HDC fault stating special programs are not available. The suspension then lowers and the battery reading drops to 13.1V. I recently had a wheel speed sensor go on the front left, which I replaced with OEM and my scanner detects it fine. Does anyone know what to do? I am getting a lot of lights on the dash and I suspect it might be an alternator problem, as my battery is correct and tested fine.

 

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lynall

Well-Known Member

Full Member

• Today at 12:49

• #2

So the battery has 14.6 volts before you start the engine?

 

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Dirtydthedefender

New Member

• Today at 13:06

• #3

No sorry it 14.6v started then drops to 13.2 13.1v after fault and suspension lowers it sits at 12.2v when engine not running

 

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Dirtydthedefender

New Member

• Today at 13:10

• #4

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Image IMG-2476 hosted in ImgBB

ibb.co

 

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lynall

Well-Known Member

Full Member

• Today at 18:57

• #5

Dirtydthedefender said:

No sorry it 14.6v started then drops to 13.2 13.1v after fault and suspension lowers it sits at 12.2v when engine not running

Click to expand...

The D3 can run up to 15.2 volts when it needs to, generally higher charge rates means the battery is on its way out.

 

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TheMunster

Active Member

• Today at 19:35

• #6

You need to read the codes, the battery voltage readings are probably innocent, its higher when the battery needs to recover from starting the car but lowers when the battery gets charged. Anything from a height sensor to a wiring fault could be causing this. Playing parts darts with these cars is expensive.

Edit - 12.2V is a dead battery, needs a recondition but more likely replacing.