Discovery 4 "charging fault"?

[PeteB]

My Discovery 4 started to misbehave the other day, restricted performance and when I plugged in the OBD2 device, it came up with a fault code for charging issues and it was only reading 12.9v at 2000rpm. After a right battle, I fitted a new alternator. The battery was new about 8 months ago and the indicator is green. Took it up the road and the dash lit up with every fault going!  HDC,EBD, Gearbox, ABS blah blah blah.....I  tried the trick of disconnecting the battery for 20mins then keeping the car pos and neg together to reset the ECU, but it still says "charging fault". OBD says we are getting 13.9v at 2000 rpm.

 

Anyone got a clue?

[openspaceman]

19 minutes ago, PeteB said:

Anyone got a clue?

Does the Battery Management System need resetting on these when there is a change?

 

Else your middle name is Jonah

[PeteB]

Nothing was done when the new battery was fitted, how would you reset the battery management system anyhow?

[openspaceman]

32 minutes ago, PeteB said:

Nothing was done when the new battery was fitted, how would you reset the battery management system anyhow?

Dunno but I may have to find out as Granddaughter has acquired a 14 plate RR sport with the SV6 diesel and I dread anything going wrong with that.

 

My Ford IDS software worked on some LR products up till Ford got rid in 2008 and I don't know what dealers used after that.

[PhillH]

My Discovery 4 started to misbehave the other day, restricted performance and when I plugged in the OBD2 device, it came up with a fault code for charging issues and it was only reading 12.9v at 2000rpm. After a right battle, I fitted a new alternator. The battery was new about 8 months ago and the indicator is green. Took it up the road and the dash lit up with every fault going!  HDC,EBD, Gearbox, ABS blah blah blah.....I  tried the trick of disconnecting the battery for 20mins then keeping the car pos and neg together to reset the ECU, but it still says "charging fault". OBD says we are getting 13.9v at 2000 rpm.
 
Anyone got a clue?

Hi, I know when you change a battery on a Audi it needs coding to the car so Land Rover could be the same with the new technology. It will start but start to bring up faults and not charge. Also the battery has to be of the same type so best to order the battery from the reg plate. Land Rover / Range Rover have changed a lot over the years. Even head lights are coded on the new ones so they can not be just swapped with out the software.

[PhillH]

Hi, I know when you change a battery on a Audi it needs coding to the car so Land Rover could be the same with the new technology. It will start but start to bring up faults and not charge. Also the battery has to be of the same type so best to order the battery from the reg plate. Land Rover / Range Rover have changed a lot over the years. Even head lights are coded on the new ones so they can not be just swapped with out the software.

Might be worth checking the exciter wire is getting a feed too.

[Tyz05]

I look after a couple of disco 3’s and 4’s and battery related faults crop up quite a bit, faults ranging from bad connections, faulty alternators even including one occasion when a battery failed while driving leaving the young female occupant trapped inside the car unable to unlock the doors or open the windows to escape in the middle of the road at night with no lights. You’ll probably find it has recorded a fault on the ecu when you’re old alternator gave up, unfortunately this will need diagnostic machine to delete. Check the charging at the battery with a multimeter, I have know people have issues with “cheaper” replacement alternators. Also check the wiring at the alternator hasn’t rubbed through the insulation.