Alfa Romeo 164 Register.com

Hello everyone
My Q4 had the problem that the four-wheel drive light came on after about an hour of driving.
Error "Hydraulic pressure, fluctuation too large"
This error then appeared more and more frequently. First I changed the oil and also cleaned the rear filter element. Finally, I replaced the accumulator.
I took the FEBI BILSTEIN 01817 pressure accumulator. This is used in brake systems from e.g. BMW with hydraulic brake boosters. The part fits 1:1.
Now the problem is fixed.

That is great parts info, thanks for posting this

And also great that you solved the problem

OMG I have the same problem currently in mine, without success for YEARS! I'll order this part ASAP, and confirm if it indeed solves the issue. Amazing tip, can't wait to check it out!

And it's already ordered, that part is readily available everywhere!

I have also ordered and received new ones, so that it is ready when the car is put back together