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Old 12-26-2009, 04:46 PM
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wilson009 wilson009 is offline
Officially Welcomed to the 'Fest
Location: Buckeye Country (Cincy)
 
Join Date: Sep 2009
Posts: 440
Mein Auto: 2002 745i 116k
DCS Valve Block Replacement

I had this diagnosed as bad at the dealership earlier. When turning to the left at a certain speed I would hear at distinctive Pop in the lower engine on the passenger side. This is also where the Valve block is located. After pop the Dynamic Stability Control Error would pop up and shut down DSC. I could reproduce the error anytime I wanted by turning to the left and it would reset itself when I shut off the car.

The part at the dealership is $1000 like everything else.

I got lucky and picked up a new one on ebay for $250.

The valve block is nothing more than a heavy piece of aluminum with passageways for the fluids. The fluids are controlled by solenoids in the block. I guess BMW can't isolate which solenoid is malfunctioning so they just replace the entire thing........

To get to the block

Remove the wheel on the passenger side
Remove the access panel to expose the block
Remove some bolts on the under-body protection to give space to get under.


Removal is fairly straightforward.

Use Crows feet to remove each line.
Problems you may run into are the lines being seized up with Rust and needing to be replaced.

Remove the 2 electrical connections.
remove 2 bolts on the bottom holding the block.

Installation requires some care as as the block is aluminum and you don't want to strip the threads from the steel high pressure lines.

I installed the lines on the top of the block first so I could manipulate the block to line up with the lines. They are at a weird angle so it is very difficult to get the threads lined up correctly.

I broke apart the old block to show the components of the block
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