2019 Golf GTI autohold issue

[Just sad]

Good evening Folk. I have a Golf Gti Performance here with a auto-hold issue, it will not release after in engages, I have scanned it with not error codes in the whole car. It has VWFSH and its been to a local dealer to be looked at without a result and now it appears to have engine oil in the brake fluid reservoir, I have sent off a sample to have it tested to confirm, has anyone else had this before?

[loskie]

there's no way that could get in there without being put in. These auto electric rear brakes are a pain in the ass for sticking and sooner rather than later you will need new calipers.


Oh how I yearn for a PROPER handbrake. The yoof of today are being deprived handbrake turns. Innit Bruv.

[Dr G]

Agreed - if for some reason oil is in the brake fluid reservoir someone has poured it in there.

Stupid question - is your seatbelt fastened properly when you're trying to release it? If your brake fluid is contaminated you'll want to flush and replace it as a matter of course, but if the auto release still doesn't work you'll want a methodical diagnosis on the root cause. I assume things like wheel speed sensors, seatbelt receivers, brake servo pressure, ABS function all tie in, so if you've no apparent fault codes technician will need to work through feeds, signals etc. with guided fault finding to see what's missing.

Rear brake corrosion can be a problem on this platform. Used lightly the rear discs do very little and are often rusty well before they're thin (inner faces will look worse than outers).

Edit - 118k on mine. Original, untouched rear calipers that work perfectly and quietly.

[Drive Blind]

auto-hold doesnt use the handbrake mechanism, does it?

i'd suggest auto hold not releasing is a sensor issue, whereas the handbrake sticking on might be more a mechanical issue.

OP - does the handbrake work manually OK?

[GVK]

Auto hold is controlled by the ABS module - separate system to the rear handbrake.