For a while I have been getting on and off some faults showing up for about 5 seconds after start, then going away. Usually its "Transmission fault reduced traction" and "HDC off" etc. Drives fine. Today had "suspension fault-max speed 30" followed by lowering to bump stops. Turned off, restarted and been fine for the rest of the 80 mile journey.

Before leaving, battery read 11.9v, when running 14.7 and when I got back with engine off 12.4-12.3.

Volts drop to 11.6 when cranking.

Is that the likely cause of faults flashing up?

New battery time (it is from August 2017).

Thanks

I've had 2 SC's now and both have manifested low batteries with the "Transmission Fault Reduced Traction" error message.

I've charged both of them and it went away but came back a while later. Swapping the batteries cured both.

11.9v when sitting switched off is low, it should be over 12.

Interesting you're seeing 14.7 with it running, my IID tool reports my car sitting at 13.2v constantly so am wondering if my alternator is knackered.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

HDC inactive / HDC OFF and the like, mean "LOW BATTERY" in the L322 dialect