Battery charger working ok? Batteries charged? Do you have a voltmeter to check each battery for its proper voltage?
This is 24 volts system with 4, 6 volt batteries? You say it won't raise? Do you here the main motor solenoid close?
It won't raise from lower control or upper? Will it still drive?
I assume it steers?
Pump motor should run lift and steer and likely drive. So pump , motor and solenoid should be good.
With just lift not working, the lift solenoid may have bad connection or bad coil. See if you can locate the lift solenoid, and swap coil from one of the other functions.
With it not having control from lower or upper, it is not likely a switch.
Locate the level switch, and see if it is working.
Level switch would keep it from lifting.
The Haulotte is not one I have. Genie and JLG have on line manuals., but not this.
Tilt sensor will look like this
Look for led lights to be lit. Look for loose connections or obvious damage.
Tilt sensor is in the lower main section, look behind the battery charger and the lower control panel.
Raising the platform will not help. And is not advisable.
I think you have lift valve problem or tilt sensor problem. And with it working intermittently, thinking bad connection.
I will leave link in your email to get back to here. But I will be out most of the middle of the day tommorrow, have dr appt.
Did you leave it on charge this evening?
Good , a good overnight charge can make a big difference. Thanks, XXXXX XXXXX