Long brake pedal on D4

**discorevy** · 10th April 2017, 11:17 PM

Originally Posted by entropy

Feels wrong as well. Mid travel there's a whisper of brake, then they finally come on. Yes, pedal comes up if pumped.I'll get it to the dealer tomorrow. Hopefully no big deal to sort out, just a system bleed.

Make sure you have fluid in the reservoir before taking it to the dealers, if there's a leak and it runs out it could be nasty , tell them you've run out of brakes and they'll come to you

**DiscoJeffster** · 14th April 2017, 08:38 PM

Did you get a resolution to this?

**Mungus** · 21st April 2017, 05:30 AM

I have reported the same issue basically since new. Each time they simply bleed the system and all is good for another few months until long pedal is evident again. A quick touch prior to braking gets it back up again. They have checked the booster for oil contamination and found nothing. On one occasion I opened the reservoir cap and pedal came back to normal. Service manager has noted that there is obviously air getting in the system over time and will continue to investigate. I noticed the other day, dust accumulation around the calipers, but after three years I would have expected such. At the very least make sure you keep reporting it so it is on your record.

**discorevy** · 21st April 2017, 07:48 AM

Originally Posted by Mungus

I have reported the same issue basically since new. Each time they simply bleed the system and all is good for another few months until long pedal is evident again. A quick touch prior to braking gets it back up again. They have checked the booster for oil contamination and found nothing. On one occasion I opened the reservoir cap and pedal came back to normal. Service manager has noted that there is obviously air getting in the system over time and will continue to investigate. I noticed the other day, dust accumulation around the calipers, but after three years I would have expected such. At the very least make sure you keep reporting it so it is on your record.

Sounds like a vacuum is forming with yours Mingus, have you mentioned this to the workshop?

**Mungus** · 21st April 2017, 09:31 AM

Originally Posted by discorevy

Sounds like a vacuum is forming with yours Mingus, have you mentioned this to the workshop?

No but I will. Cheers! Can you elaborate as to how/where a vacuum would form. Are you referring to the release of the reservoir cap?

**discorevy** · 21st April 2017, 11:39 AM

yep , thinking it might be coincidental that its the removal of cap when they bleed it that makes it ok again for a while until vacuum builds , the breather on the cap could be blocked, giving you the symptoms, I did spell Mungus but auto correct auto wrecked

**entropy** · 27th April 2017, 04:32 PM

Wow, what a difference having brakes makes. Dealership ended up doing a manual bleed (?) to all wheels and the brake pedal feel is now nice and firm. Such a difference I can't stop smiling. Maybe it's even a permasmile

cheers and thanks all for your input.

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