I may have a fault - I may not ! - I just don't know what is supposed to happen.

My aux radiator - the one low down, forward of the right wheel well gets warm, all the time.
The vehicle seems to take quite a time to get up to operating temperature but once it does its sits nicely in the middle of the temp gauge. Enine runs fine and it doesn't throw up any OBD errors etc.

So here comes the question..... Does anyone know how the aux radiator is supposed to operate ? - Is it supposed to stay cold until it's needed ? and if so where is the valve/thermostat that controls it ? - is it in the main thermostat body ? And are there any common faults that might cause it to be warm when it's not needed ?

Thanks in advance

Oh - 3.6 TDV8 2007 Previous life - 2012 L320 SDV6 - Got divorced, say no more!
Previous life - 2014 L494 SDV6 - Got nicked, without keys, watched it go !
The Duchess - 2007 L322 TDV8 3.6 Autobiography with 270K miles on the clock
The Bonkers One - Audi SQ7 V8 4L TT - It will pull your face off.

https://www.fullfatrr.com/forum/post528598.html ______________________________
Simon
______________________________

Range Rover Classic 3.5 efi - Gone
Range Rover Classic 3.9 efi - Gone
Range Rover Classic 4.2 LSE - Sadly gone
Land Rover 110 3.5 - Gone
Range Rover P38a 4.0 SE - Pleased it's gone
Range Rover P38a 2.5 DHSE - Just sold
Range Rover L322 4.4 v8 Petrol - Current

Thank you Simon,

Spot on info.

With the added bonus - mine is working fine. Previous life - 2012 L320 SDV6 - Got divorced, say no more!
Previous life - 2014 L494 SDV6 - Got nicked, without keys, watched it go !
The Duchess - 2007 L322 TDV8 3.6 Autobiography with 270K miles on the clock
The Bonkers One - Audi SQ7 V8 4L TT - It will pull your face off.

👍🏻 ______________________________
Simon
______________________________

Range Rover Classic 3.5 efi - Gone
Range Rover Classic 3.9 efi - Gone
Range Rover Classic 4.2 LSE - Sadly gone
Land Rover 110 3.5 - Gone
Range Rover P38a 4.0 SE - Pleased it's gone
Range Rover P38a 2.5 DHSE - Just sold
Range Rover L322 4.4 v8 Petrol - Current

If it takes ages to warm up is aux heater working within ambient temp ranges to work and is stat working as it should.

What's ages? Cheers

James

I think you're probably right about the aux heater. Mine starts to fire up but then throws an error code referring to the electric pump being faulty (which it could well be) so that probably accounts for the slow warm up.
I have to replace my coolant reservoir bottle week after next so will take a look at the pump whilst the coolant is drained down.
Thanks for the the thoughts though. I'll let you know how I get on.  Previous life - 2012 L320 SDV6 - Got divorced, say no more!
Previous life - 2014 L494 SDV6 - Got nicked, without keys, watched it go !
The Duchess - 2007 L322 TDV8 3.6 Autobiography with 270K miles on the clock
The Bonkers One - Audi SQ7 V8 4L TT - It will pull your face off.