New Dubber
Hey guys,
SO I have an issue with my 9n3, the pedal is soft after working on the brakes and I have gone to the great expense of acquiring a Ross-Tech cable and doing a bleed through my laptop.
The problem is when I go into the procedure, I get an error message in Block 002.
This is a major annoyance as this was the primary function I was after.
Any advice is greatly appreciated.
Thanks in advance.
Volkswagen Enthusiast
I know you're asking for advice directly related to the VCDS bleeding - but have you rotated the caliper 180 degrees when bleeding? That was the mistake I made and why I could never bleed my 9N3 brakes by myself. Apologies if it was obvious to you, but I completely overlooked it and had to drive to the shop with no brakes (luckily only 3 blocks and I stayed in first and used the handbrake haha!)
2019 132TSI Tiguan
2011 Audi S4 Wagon
1988 MK1 Caddy
2006 Polo GTI
Dub Crazy
VWwA Super Moderator
What's the error say? Using this procedure? Ross-Tech: VAG-COM: ABS Brake Pump Bleeding Did you allow air into the system, what jobs have you done on the brakes?
New calipers or what?
Gavin
EDIT tried my Polo, same deal get an error too.
Look in output tests, you can run the pump and also cycle all the valves to check them at the wheel. Follow the on screen prompts, press pedal etc wheel free, wheel locked.
Maybe that will help?
Last edited by h100vw; 07-11-2014 at 11:49 AM.
New Dubber
So I just replaced the discs and pads all round. I have tried the output tests but to no avail. I can hear the pump applying pressure to the corresponding caliper but nothing comes from the nipple.
To my understanding the output test would only use a minimal amount of fluid and not constantly bleed out.
Also I'm not sure what you mean by rotating the caliper?
Dub Crazy
VWwA Super Moderator
Will fluid come out under gravity if you leave a minute or with a bit of pedal pressure? or is the bleed nipple blocked due to not having had a cap on it? In which case it needs cleaning out.Originally Posted by Blue Shell
Did you reset the rear calipers so the cut outs in the pistons are horizontal?
gavin
Volkswagen Enthusiast
Wait, what?
Cheap, Fast, Reliable. Choose two.
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Plenty written on here about bleeding Polos, by myself and others, there is a totally different method to bleed them. Not like the conventional furthest to master back. If you opened it up you must follow it or you will be chasing your tail.
Jmac
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Volkswagen Fan
I'm confused about this.
Are you saying that even if you're just changing the fluid, but not breaking the lines, you shouldn't use the standard left rear/right rear/left front/right front/clutch bleeding sequence? If not, why not for Polos?
Cheers.
New Dubber
Yeah I wish it was that simple, I have gone through that process and the opposite way more times than I can care.
I feel that doing this is not helping the situation and I can't comprehend fluid coming from the calliper with no bubbles and the pedal retaining it's spongy composure.
Dub Crazy
VWwA Super Moderator
VW manual says to do the fronts together with their machine before the rears together. If there's air in the system.
Then for ABS mark 60 systems, front left, front right, rear left, rear right.
Bosch ABS is rear right, rear left, front right, front left.
There's a note about long pedal travel. Which requires a second person. Press pedal and hold, release fluid at caliper until pedal goes all the way down. Tighten bleed screw then repeat 5 times, do all calipers.
Road test and get the ABS to kick in.
Gavin
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