This video is a step-by-step DIY to replace the power steering pressure hose on the '02 - '05 ML Class (ML320, ML350, ML500, ML55). Also shown in the video is how to bleed the system after the repair and how to flush the power steering fluid.

Check the Pinned Comment or below for the Timestamps, Part Numbers, and other information.

Thanks for watching, and I hope the video helps. Good luck with your repair!

Timestamps, Part Numbers, and other Information:
00:20 Notes about using jackstands and ramps for this job
01:13 Empty the power steering fluid reservoir
01:29 Identify this leak and hose

Begin repair:
02:18 Remove the Banjo bolt at the steering rack (22mm)
03:48 Remove the hose bracket (10mm):
Tip: @
carl suiter noted in the Comments that you can reach the bracket fastener from the passenger side of the oil pan using a long (2 ft) extension with a wobble end. Thanks for the tip, Carl!
04:23 Remove the flare nut at the power steering pump (17mm)
05:30 Locate the o-ring on the pump side of the hose
06:18 Remove the hose

Replacement hose information:
07:14 New and old hoses: part number A163 460 4224
07:29 Inspect the new hose for the o-ring (part number is possibly CRP 0259977548 - not verified)
08:19 Part number for crush washers (A0076 0301 8101)
08:45 Transfer the hose bracket to the new hose
09:29 Notes about the new and old Banjo bolts and washers

Install the new hose:
11:05 Guide the new hose into place
11:53 Install two new crush washers and the Banjo bolt at the steering rack
13:02 Install the hose bracket
13:47 Connect the hose flare fitting to the power steering pump
15:57 Torque down the Banjo bolt (torque is 22 ft-lbs)
16:45 Torque down the flare fitting at the pump (33 ft-lbs)

Notes about Power Steering Fluid types:
17:47 Original fill PS Fluid (honey-colored): MB Spec 236.3 (ie, MB A000 989 8803)
18:44 Later PS Fluid (green-colored): MB Spec 345.0 (do not mix 345.0 with 236.3)
19:38 Notes for a PS fluid flush (buy 2L of fluid)
21:46 Tools for a flush (3/8" ID barb and hose)

Power Steering Fluid Flush:
22:29 Elevate the front wheels (ie, jackstands)
22:45 Front end lift-point and jackstands locations
23:03 Disconnect the power steering return hose (Philips hose clamp)
24:10 Install the flush line and sight hose
24:56 Refill the reservoir and start the flush
28:42 Remove the flush line and sight hose
29:41 Reconnect the return hose to the reservoir

Bleeding the Power Steering System:
29:50 Begin the bleeding procedure
31:46 Bleeding procedure summary
33:53 Final adjustments of the PS fluid level
35:24 Check for leaks
36:13 Recheck the fluid level after a couple days

I hope this video is helpful. Thanks for watching, and good luck with your repair!