If you live in the snow rust belt, take the tires off. You need access to make sure your tools don't damage the bleeders as they will be rusted/corroded. They are easily broken. You also may need to apply some heat to get them to loosen. Fill the reservoir b4 hooking up the pressure bleeder.
Thanks for posting this! Question: after you attach the hose to the reservoir and put fluid in the pump tank and start pumping, where does the air that's in the line go? This is the one step I am confused about because it seems to be forcing air into the reservoir?
I have a 2003 330xi and need to replace the master cylinder. When doing a bench bleed do i need to run a hose of the line that goes to the DSC unit into the reservoir also and what about the rubber line ?
Sorry for the stupid newbie question... I see the MAX line at the fluid reservoir on my e46, but no MIN written. Just a mark with like two small arrows together at the very bottom of the reservoir... Is this the MIN? sorry but it's my first time...
I was told that on the E46 M3 and similar cars that water laced brake fluid will compromise the ABS system and cause thing like "caliper grabbing - failure to release" on certain wheels but not on others. So I was advised to always be sure to have (the dealer) flush the ABS system completely. Special BMW Maintenance Software (via OBD2) controls the Brake Flush Procedure and instructs the mechanic (using a power bleeder) to open the bleeder on wheel X and then hit OK on the computer at which time the software starts up the ABS pump and exercises the ABS solenoid pistons which cause a raucous noise under the hood! When complete, the mechanic is instructed to close the bleeder valve and proceed to wheel Y to repeat the procedure. Repeat until all 4 calipers are bled. Versions of this software & proper OBD cable kits may be available (circa 2018) for DIY mechanics at low cost via online sellers.
Old thread I know but just want to pick up some on the misinformation you've been given. A water laced system would mean that the car in question would've had no maintenance done for many years in order for the DSC system to be compromised. Sounds like you were basically being scaremomgered by being told you had to have the dealer to do this procedure. The main thing you need to look out for when flushing an E46 M3's brake system is to *not* let the fluid in the reservoir run dry. Having 2 litres of brake fluid in the power bleeder would ensure that this would never happen and allow more than enough for a full flush. If the reservoir was ever to run dry, this would introduce air to the 2 ABS sensors built into the master cylinder and would indeed require the ABS purge you described. Again, this can also be easily done using INPA and a cheap D+KAN cable. DSC equipped models also have no return valves built into the ABS pump so there would be minimal drawback if using the pedal pump method.
its good to know how its done but I recommend to leave it to professionals, unless you have your own garage, more than 1 car, the time and passion to grease your hands! you have to buy all the equipment and chances are if you're doing for the first time you might make mistakes that will take more time and cost you more at the other end.
If you live in the snow rust belt, take the tires off.
You need access to make sure your tools don't damage the bleeders as they will be rusted/corroded.
They are easily broken.
You also may need to apply some heat to get them to loosen.
Fill the reservoir b4 hooking up the pressure bleeder.
you said you'd show but then cut to "so anyway im done with all 4 of em, man im good".... da hell man
You can get the jack adapters for the bmw cars they fit into the rectangle spaces
Great suggestion and adapters are a good idea!
Did anyone else through a middle finger up at the rubber bleeder cap when we were instructed to flip it off?
I tried to remove the filter but I couldn't, so I left it there not to cause any damage to it. How do you remove it?
Thanks for posting this! Question: after you attach the hose to the reservoir and put fluid in the pump tank and start pumping, where does the air that's in the line go? This is the one step I am confused about because it seems to be forcing air into the reservoir?
Great question. The air in the tank will stay at the top as long as it doesn't go dry.
@@BMWDIYGuy ok, thanks! (I just ordered one)
Is it worth doing the clutch as well?
(And doing it last, because it's closest to the reservoir?🙂)
So great question.. if you are familiar with that bleed process as well, it certainly couldnt hurt.
For a diy this is poorly explained and showed
I have a 2003 330xi and need to replace the master cylinder. When doing a bench bleed do i need to run a hose of the line that goes to the DSC unit into the reservoir also and what about the rubber line ?
Sorry for the stupid newbie question... I see the MAX line at the fluid reservoir on my e46, but no MIN written. Just a mark with like two small arrows together at the very bottom of the reservoir... Is this the MIN? sorry but it's my first time...
Correct, that lower mark is the minimum.. all good questions. 8)
@@BMWDIYGuy thank you!!
Do you have to take the filter out?
The filter in the top of the tank? If so, you don't.
I hear new models need their ABS bleed too and it's only done by dealer with computer... :/ Your thought?
Zen0s cant say I have heard that and didnt have issues on my F32
I was told that on the E46 M3 and similar cars that water laced brake fluid will compromise the ABS system and cause thing like "caliper grabbing - failure to release" on certain wheels but not on others. So I was advised to always be sure to have (the dealer) flush the ABS system completely. Special BMW Maintenance Software (via OBD2) controls the Brake Flush Procedure and instructs the mechanic (using a power bleeder) to open the bleeder on wheel X and then hit OK on the computer at which time the software starts up the ABS pump and exercises the ABS solenoid pistons which cause a raucous noise under the hood! When complete, the mechanic is instructed to close the bleeder valve and proceed to wheel Y to repeat the procedure. Repeat until all 4 calipers are bled. Versions of this software & proper OBD cable kits may be available (circa 2018) for DIY mechanics at low cost via online sellers.
Old thread I know but just want to pick up some on the misinformation you've been given. A water laced system would mean that the car in question would've had no maintenance done for many years in order for the DSC system to be compromised. Sounds like you were basically being scaremomgered by being told you had to have the dealer to do this procedure. The main thing you need to look out for when flushing an E46 M3's brake system is to *not* let the fluid in the reservoir run dry. Having 2 litres of brake fluid in the power bleeder would ensure that this would never happen and allow more than enough for a full flush. If the reservoir was ever to run dry, this would introduce air to the 2 ABS sensors built into the master cylinder and would indeed require the ABS purge you described. Again, this can also be easily done using INPA and a cheap D+KAN cable. DSC equipped models also have no return valves built into the ABS pump so there would be minimal drawback if using the pedal pump method.
How did you reset the brake fluid meter on your dash?
Thank you
You poorly explained
its good to know how its done but I recommend to leave it to professionals, unless you have your own garage, more than 1 car, the time and passion to grease your hands! you have to buy all the equipment and chances are if you're doing for the first time you might make mistakes that will take more time and cost you more at the other end.
Reza Shok ... respectfully disagree. Hence the DIY acronym... in the title.