I am working my way round the car problem by problem and after tidying up the engine bay and dealing with suspension, I started work of the convertible top, which until today, did nothing when the center console switch was pressed, no top movement and no windows movement down. Checked that handbrake is on, car is in park and ignition was in 2nd position. So here is what I have done so far:
Removed all 3 electric window/top switches and electrically tested, which all acted the same on continuity test (assuming they are all the same)
Disconnected the plug to hydraulic motor and when I pressed the the top-down switch this time, the rear quarter windows went down.
Checked the hydraulic fluid reservoir behind the pump and the level was very low, so I refilled with hydraulic fluid and when I pressed the top down switch this time, the top came down, but wouldn’t go back up again.
Had to top up the reservoir several times to the max line, so seems there has either been a leak, or it has just never been maintained for years.
I moved 3 of the relays around in the back to make sure that the to-up relay wasn’t bad, but same result.
I manually raided the top twice (ensuring the switch on the pump was set to manual each time) to cycle the system, but have the same issue each time…the top won’t go back up.
Any ideas what would stop the motor/pump reversing the hydraulic flow if the relays are all good? Could it just be needing bled, which the manufacturer manual tells you to remove the pump and rams to do…which I really don’t want to have to do.