ml350

Hi guys,

is it common for the reservoir to fail on our ml?

art_arev

It does happen. I don't know what you mean by fail......
If there is a leak, it is the seal between the pump & the reservoir. No need to replace the reservoir, only the seal.

If it whines, it could be the diaphragm inside the reservoir. It can break. In this case you need a new reservoir + new seal.
Buying original reservoir &/or seal is very important.

ml350

how to tell if it making noise from the reservoir

art_arev

The car whines when you turn the steering wheel.

What exactly is the problem with your reservoir?

ml350

the reservoir is empty

Maj. Dundee

If it's empty, there must be a visual indication of where the leak is.

ml350

when i started the ml this morning it was making a whinning noise,

if i fill up the reservoir it stops whinning.

art_arev

Keep an eye on the fluid level & check if you have PS fluid on your driveway.

ml350

i see the fluid on the floor

art_arev

Since you are not saying exactly were the leak is , I have to guess.....
Stick your fingers under the reservoir & see if its the source of your leak.
Second option is the hose from the steering rack to the radiator.
Were is the leak? Is it on the left side under the radiator or under the PS pump?
If it is option 1 , then get a new seal. Option 2 requires a new upgraded clamp.

ml350

the leak is not coming from the hose coming from the radiator to the steering rack. The leak coming from the area of the reservoir because i can see fluid on the power steering pump.

art_arev

Get the reservoir seal part # A000 466 18 80. It will cost you between $5-00 to $15-00 & change it.