2018 Volvo FH night heater

Hello,

I’m currently tramping in a Volvo FH, and I keep waking up cold with the night heater off, when I left it on before going to sleep.

Is there any way to stop it from deciding to switch off half-way through the night?

Cheers.

According to the manual it should run for 10 hours before switching off, but only 2 hours if launched by the timer.

I wonder if your batteries are a bit past their best and it’s switching off due to low voltage.

njl:
According to the manual it should run for 10 hours before switching off, but only 2 hours if launched by the timer.

I wonder if your batteries are a bit past their best and it’s switching off due to low voltage.

Yeah batts are utter crap, wasn’t sure if this was it though!

Not a Volvo driver myself. Got the “BattAmp” function hidden away somewhere?
stpi.it.volvo.com/STPIFiles/Vol … 893945.pdf