Question about 1989 Mercedes-Benz 300-Class

1 Answer

Air in brake lines

I have a 89 300c Mercedes benz and I noticed I didn't have any brake fluid and put more and than started to bleed the brakes due to no pressure but when I do nothing but air comes from back two tires front two are fine although

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Greenhorn:

    A rookie expert who has answered 20 questions on their first day.

  • Expert
  • 100 Answers

Make sure the cap is on when you go to bleed. When you press the pedal down hold it to the floor and have an assistant pour fluid in reservoir then put cap back on before letting up on pedal repeat as necessary. If not working still you have a bad master cylinder

Posted on Feb 16, 2014

  • 1 more comment 
  • Deshawn Clanton
    Deshawn Clanton Feb 16, 2014

    thanks for the quick reply and i will buy one tomorrow and see if that helps since they dont cost that much thanks again

  • Jason Johnson Mar 03, 2014

    You have ABS brakes. You must have a unit or take it in to have brakes bled. The master cylinder with car off cannot push out of the ABS pump.

  • militantbeast
    militantbeast Mar 03, 2014

    No every car after 83 has abs that's not an issue the unit has a burp valve so air is released just make sure to keep adding fluid as you bleed

×

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

BearWeb
  • 357 Answers

SOURCE: Mercedes Benz C180 Fault Message Brake Assist.Visit Workshop BAS

Hi there

BAS is the Brake Assist System and if there is a malfunction it would only come into play in an Emergency stop while applying full pressure. BAS applies full braking force because people tend to lighten up their pressure on the pedal in these situations. I would suggest that the best thing to do is go to a Workshop or Service Center and have it checked out. Please remember to put a good rating on my profile.

Kind regards
Dustin Ellse

Posted on Jun 26, 2008

  • 6 Answers

SOURCE: BAS (Brake Assist System)

need to replace brake switch intermittent problem with them ....for lights bas, abs,asr,to go off..

Posted on Oct 11, 2008

blueextc3221
  • 15935 Answers

SOURCE: What r the maintenace cost

Find that info HERE

Posted on Jan 15, 2009

SOURCE: 2003 Mercedes benz e320 brakes

It is imperative that you loosen the caliper bleed screw BEFORE you push the piston back into the caliper. Failure to do so WILL damage the ABS hydraulics.

Posted on Apr 17, 2009

alicantecoli
  • 22156 Answers

SOURCE: reset brake on benz e-350 2006

you cant reset anything on this vehicle ,last time i changed brakes on one of these the immobilisor cut in .so it was dealer job ,they read bar code on brake pad packet before the internet connected computer would release the immobilisor .Its all encrypted software via internet with factory and as its a merc it cost a fortune

Posted on Dec 14, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2007 ford sport trac 4.0 2wd just put brakes all the way around bleed brakes brake lines not leaking still brake pedel goes almost to the floor to stop disk front and back done everything right


obviously not or you would have brakes

there is still air in the lines and that can be from a master cylinder that has an air lock and is not allowing fluid to pump

Take it to an accredited brake specialist for diagnosis and brake bleed

when bleeding the brakes , it is a 2 person operation and each line ( starting at the longest line is operated until only solid fluid comes out when the bleed screw is operated

Mar 07, 2016 | Ford Cars & Trucks

1 Answer

Rear caliper on 2005 Ford F150 not releasing, replaced both rear calipers, now pedal goes to the floor - no brakes at all. What can/should i do?


Sounds like it still has some air in the system or a bad master cylinder. First try bleeding all air, there is definitely some air left in the lines and this is most probably causing the problem. Bled the lines at the bleeder screws on the calipers. ---------- There is air left in the brake line.Any time the brake system is opened to replace brake lines, caliper, pads etc etc.Mostly the air enters the system, and that air has to be completely bleed.Otherwise the same symptoms , what you are getting will be noticed.-------- Brakes can be bled manually, with a power bleeder, injector tool or vacuum bleeder.IIt does not make any difference which method you use as long as all the lines and components are flushed with enough fluid to remove any trapped air bubbles or air pockets.----
The most common bleeding procedure is to bleed the brake furthest from the master cylinder first, then bleed the other brake that shares the same hydraulic circuit (which may be the other rear brake on a rear-wheel drive car or truck, or the opposite front brake on a front-wheel drive car or minivan). After these have been bled, you then bleed the other brake circuit starting with the furthest brake from the master cylinder.--------- When the complete air is bleed from the line, the brake should be firm when car is on.In your case brake brake pedal is loose and goes almost to the floor when car is ON.This is due to Air in the line.Get the complete air bleed from brake line.------- This will help.Thanks.Helpmech

Sep 07, 2011 | 1998 Ford F150 Regular Cab

1 Answer

MERCEDES BENZ 2003 MODLE E320,HOW TO BLEED BRAKES


remove brake fluid filler cap start at the wheel closest to cervo then move away so front to back remove road wheel there is a brake nipple on the caliper put a piece of tubing around nipple and into a jar with clean brake fluid in it loosen nipple get some one to pump brake peddle about 10 times on the final stroke keep peddle pushed to floor then tighten nipple up pump brake peddle a few time should be hard then repeat all wheels rear should only have 1 nipple for rear wheels but check this any way

Jul 02, 2011 | 2005 Mercedes-Benz Mercedes Benz E320 Cdi

1 Answer

My 2003 ml350 petrol needs the brake pads replaced but ever since the brake inication light has started coming on it has had trouble starting I was wondering if somehow theses could be related


IF YOU OPEN BRAKE LINE ON BRAKE CALIPER WHILE CHANGING BRAKE PADS IT WILL CAUSE BRAKE FLUID LOST CAUSING AIR IN BRAKE SYSTEM IN WHICH BRAKE LIGHT WILL COME ON.YOU NEED TO BLEED BRAKES.

Nov 08, 2010 | Mercedes-Benz ML350 Cars & Trucks

1 Answer

I have no barkes i put all new lines on and no i bleed them starting whit right rear and still no


When you stand on the brakes does the pedal feel soft or hard? If soft the chances are you still have air in the system. Tighten (not too much just enough to prevent the escape of brake fluid) all the bleed nipples. Now make sure there is fluid to the maximum in the master brake reservoir. Stand on the brakes to extend all the slave pistons as far as they can go with the current situation. Starting with the the right back (as you correctly did originally) put your finger tip over the end of the nipple and undo it with an open ended spanner by only a quarter of a turn. Have a friend step on the brake pedal. When he has got to the bottom of travel push your finger hard on the nipple tip and tighten the nipple gently with e the spanner. Your friend can now release the brake pedal slowly. Again ask your friend to press on the pedal and then you undo the nipple a quarter of a turn to bleed of the fluid (and bubbles). When your friend reports that the pedal is on the floor, again tighten the bled nipple. Again your friend can only now release the brake pedal slowly. There will come a point when your friend will notice some resistance to the pedal before you slacken the bleed nipple to bleed the fluid. Keep bleeding this brake until a quarter of a pint of fluid has been pushed through and now tighten the bleed nipple firmly. Add fresh brake fluid to the brake reservoir under the hood. Now repeat this process with the back left wheel, then front right and then front left. The important thing is 1) ensure that the brake pedal is never lifted until the bleed nipple is tight otherwise air is sucked in through the nipple; having your finger tip on the end can help avoid this and 2) to ensure that the reservoir is always full of brake fluid so that only fluid can enter the system and not air 3) that you bleed plenty of fluid through the system, when you replace brake lines it is surprising just how many little pockets of air can hide in it. Good luck

May 12, 2010 | 2000 Chevrolet Blazer

1 Answer

I replaced the front brake pads,I need to know how to bleed the front line.


remove master cylinder cap and fill with brake fluid.
start at back passengers rear , helper pushes brake pedal 3 times. you or whoever losens zert with. small wrench. bleeds air pedal pushed to floor. repeat .
switch to driver rear brake . repeat couple times
then move to front and do same, starting also with passenger side first.
make sure master is full of fluid
hope that helps

Dec 13, 2009 | 1998 Mercedes-Benz S-Class

2 Answers

Changed brake pads! Success.. Now I need to bleed the brakes.


To bleed you brake system, you will need brake fluid, a jar, and a couple feet of small hose that fits tightly on the bleeder screws. You should not need to remove the tires to access the bleeder screws, but you may need to raise the vehicle a bit to access them.

To bleed the system, start with the right rear wheel. Put a couple inches of brake fluid in the jar, attach the hose to the bleeder screw, put the hose in the jar of brake fluid, then open the bleeder screw. Once the bleeder screw is open, pump the brake several times. Next, close the bleeder screw. After you close the bleeder screw, remove the hose and jar, then fill the master cylinder with brake fluid.
Repeat the steps going to the left rear second, right front third, and left front last.

Once you have bled the system your brakes should be tight and working nice.

I hope this information helps you, and I wish you luck on your repair.

May 10, 2009 | 1995 Mercedes-Benz S-Class

1 Answer

Brake fluid warning light stays on coupled with short quick sound


Have the brake pads removed and cleaned. Also do some bleeding to release any air in brake system.

rate this please.

Apr 12, 2009 | 1998 Mercedes-Benz C-Class

1 Answer

Keep getting air in break lines


1. bleed your vehicle while the engine is running. 2. Check ALL your brake lines, connections and wheel brakes cylinders or calipers of any leaks or moisture. 3. If nothing happens, your brake masters or your caliper's pistons may be weak and needs replacement.
post me of any development

Dec 09, 2008 | 1987 Mercedes-Benz Mercedes Benz 500 Class

Not finding what you are looking for?
Cars & Trucks Logo

71 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercedes-Benz Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

yadayada
yadayada

Level 3 Expert

75822 Answers

Michael Contreras
Michael Contreras

Level 2 Expert

166 Answers

Are you a Mercedes-Benz Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...