Galaxy Tire Pressure ABS Issues

Sounds familiar. I had a similar issue with my old Renault Megane, though it was just the shaking steering wheel and low tire pressure warning. Have you checked the tires themselves for any visible damage or slow leaks? Also, when you inflated the tires, did you inspect the valve stems for any cracks or corrosion? Those can cause slow leaks too. Finally, does the warning light specify which tire is low, or is it a general warning?

I visually inspected the tires and found no punctures. The warning light is general, not specific to one tire. I didn't specifically examine the valve stems; is this a likely cause?

On my Megane, the valve stem was the culprit. A tiny crack caused a slow leak, triggering the warnings and eventually affecting the power steering pump due to low pressure, hence the shaking. Given your symptoms and the fact the light isn't specific, a defective valve in one of the tires is quite plausible. A workshop diagnosis is advisable.

Thank you for the advice. It turned out to be a defective valve in one tire, as you suggested. Repair cost was 280€.