Power Steering Flush 2002 C320 Mercedes

Things Needed

Flat Head
Funnel $ 1.50
Fluid extractor
Bowl to catch fluid
P/S Fluid (Pentosin), 1 QT AIC CHF11S Price 20.99$
And 30 mins of your time
8MM Wrench

My Mercedes Book




http://www.napaonline.com/Search/Res...word&Nty=1&N=0

1. Remove Splash shield on the lower side of the car.. 6 Screws

Put it to the side..

2. Open hood remove plastic from the right hand side attached to air filter box


3. Open Power steering Tank cap and start sucking out fluid


Here is the color of my fluid that was in my car




4. After Sucking out the fluid from the tank. Time to go under the car and disconnect the cable coming from the Power steering rack. Like this


Place cable in a bowl



Let the fluid drain Keep cable inside the bowl now head to the top of the car

5. disconnect this cable


After disconnecting this cable i hooked another cable the same size to it.. And blew out the rest of the nasty power steering fluid.

^ ( You don't have to do number 5 but just to make sure everything is out )

6. ( Make sure you now plug back in cable number 5 ) Now Start Flushing out the old fluid by Pouring new fluid inside the tank.




7. Look through the motor area and look at the cable below that you disconnected before.. You will see old fluid starting to come out.. Keep pouring until you see new fluid ( Green ) pouring out.. THEN STOP

Should look like this



Nice and clean

8. Reconnect the cable under the car after all the nasty fluid is out..

9. ( Tricky Part ) Fill up the power steering tank.. Put cap on. Start the car for (three seconds ONLY) . Shut the car off.. Fill Tank back up. Do this 5 Times.

10. ( I had to do step 9 ) 5 times until my tank had no more air in the system or lines. I did have to suck a little fluid out because i had to much in.

Car steering is so much smoother..

The color of my old fluid VS my new fluid is just amazing..

Amber gold To Fresh Green

This is posted to help peeps

 

Wow this is just what i need i just bought some ps fluid to do this but had no clue how i i was going to do it.

 

Dude its so easy trust me ive never done much work on cars before.. This job was 30 mins and anyone could do it..

Im about to flush my coolant so get ready for another DIY

 

wow you are my new bff lol that is another thing on my list very soon
Keep up the good work.

 

Nice! Subscribed for future reference!

 

I changed my Rear differental Oil to Mobil 1 75-90 about a week ago i should have done a DIY of that too but that job is way to easy

Ill do DIY for it in about 30k miles

Transmission fluid will be soon.

Oh and thanks i love working on mercedes cars only. haha truee

 

Great DIY...thanks!

Please produce equally good DIY's for your other fluid changes as well.

Im going to be doing my PS, diff, coolant, brakes and transmission in about 2-3 weeks and its always good to have some guidance.

 

great diy. Im going to do this pretty soon also

 

Niiiice Sick DIY Bro...detailed with clear pictures.

 

Well i did it about an hour ago. WOW is all i can say my fluid was darker then yours. flushed the system out and plan do to it again in two weeks again fully to make sure it is nice and clean. It made such a difference the steering feels completely different in a good way. Took me longer to get the drop light out and ramps and tools then it did to do the work. total time was 15 minutes i think. I used a medical syringe to get the fluid out with a giant needle (what i have access to moms a vet) and that worked really well. I recommend everyone to do this you can't really screw it up and it is so easy to do.

 

Yeah i was gonna say the same thing my car handles so different now.. So responsive.. Before it was hard to turn the wheel now its like nothing.. I'm still trying to get use to it driving at higher speeds.

You should have seen my ATF fluid haha i bet you would have dropped over out of your chair

I was at 102k Miles when this was changed just a note~

 

102k yeah i wonder what a good service interval for power steering fluid would be? I would say 60k would be ok 40k would be ideal what do you think? I did my transmission at 98k or so again at 115k and again at like 135k. I will also be doing it again around 155k (i am at 151k so close to the first high millage award i have been waiting for two years for this)
Glyn if you are out there do you know what SA recommends for power steering fluid because i like SA's intervals for stuff so much better then MBUSA.

 

Well i got my car at 70k miles and i changed it at 100k i have no idea if it has ever been changed..

My transmission cap has been popped before so maybe it was changed but it was so black that i don't think it was.

 

Excellent writeup, thank you.

I shared this on my home forum, as we have the same guts under the hood and this will no-doubt prove useful for our guys.

http://www.crossfireforum.org/forum/...tml#post537133

 

Hey Thanks man means a lot.

 

oh i wish u have done aDIY for that

 

great diy

 

Subscribed!

 

Just seeing this. Great DIY, thanks

Does anyone know if the power steering fluid is like brake fluid? Does it absorb moisture? Should I open a new bottle or use the open one I have?

Thanks

 

Thats a good question

 

Great write up.

Does anyone know what the factory recommends on the change interval?

 

Great DIY!!! I've never flushed power steering fluid before but it looks like I'll be doing it sooner rather than later.

Thanks!

BTW - cable = hose.

 

FYI, MB TSB says do not start the car to remove the air. Turn the wheel lock to lock "up to 30 times" is what it says before starting the car. I did it 10 times, checked the level, 10 more, check the level, repeat until the level doesn't go down any. Then start the car and go lock to lock at least 5 times and check the level. It shouldn't go down and you shouldn't see any bubbles.

 

MB Maintenance Manual doesn't list the interval for power steerig fluid change. So, that means PS fluid is "lifetime" :-) you know what that means...

 

after the fluid is changed, please remember to bleed [air out of] the system. Without starting the car, the steering wheel needs to be turned full lock-to-lock around 30 times. The only way to accomplish that without running the engine is to have the front end lifted (both front wheels off the ground). As you trun the steering lock-to-lock, you (second person) will see the bubbles coming up in the PS fluid reservoir. You stop turning the steering when the bubbles stop.

I have done this on my ML (same engine M112 as my 2004 C320).