Today I have ordered a new battery 920 Amps 110 Amp Hr £68.00 + Vat from a friend of mine. I understand that 'HawkEye' has its limitations but I would have expected to see some fault code on one of the systems I read or am I just being a newbi ) lol. I have also confirmed this by opening the bonnet and charging the battery for 5 Min's before starting the engine 1st thing in the morning.ĭoes the 元22 Range Rover really have 28 ECU's ? I was talking to somebody from a different forum who told me they have 8. I agree that once the vehicle is started 1st thing in the morning the battery will get a small surface charge which will stop the 'HDC Inactive' message. The red light 'P' on the gear lever and the amber window lock light take about 15 Min's to go out once the vehicle is locked and when this happens the battery voltage slowly rises. I don't think that I have a drain on the battery as I have checked the voltage once the vehicle has gone to sleep (12.56v) and 1st thing in the morning (12.25v).

HDC Inactive - Automatic battery optimisation & 元22 2003 Range Rover Vogue TD6 I want to hook our vehicle up to a: OptiMate 4 My wife only does short trips and I have put this down to the battery going flat and only getting a surface charge which prevented the 'HDC Incative' message from coming on in the day. I expect this to drop to 12v by the morning. This was done about 15 mins after coming of charge, I then put it back on my vehicle and monitored the level for the next hour once all systems had powered down it settled around 12.67v. I had my mate who is a trainer with the AA check it with battery tester and it said: I tested each cell with a multi meter and got a reading around 2v per cell. I removed the battery and the little window that showed a green glow was black so I charged it over night and day with numerous battery chargers I also added a 2 'Batt Aid' tabs to each cell. I think that I have traced this to a flat/low battery.

For the past few weeks we have had a 'HDC Inactive' message apper on the dash first thing in the morning when you start up.

2003 range rover charging system fault