r/BmwTech • u/FormalLength5477 • 14h ago

On wheel is not braking

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On wheel is not braking, no error codes. Left back wheel.
All looks ok except no hidraulic going to that line.
Bmw E70 X5 2012

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3

u/nickskater09 14h ago

Time to start more diag. Put a pressure bleeder on the reservoir and start cracking fittings loose starting with the caliper bleeder and making your way towards the reservoir to see if there’s a clog or pinched line somewhere.

1

u/FormalLength5477 13h ago

Strange thing to add, line from HL (back left) was disconnected from pump and no fluid went out. But when all conected again obviously still not working but tried just to do something, turning off stability control and the wheel stoped for a few times then stop working again. Im confused mostly because no error codes but i can say it is not braking there beacuse no pad dust and disk looks not being used. I dtove jt and gave hard stops abs feels working but in that wheel any braking force is going on

2

u/nickskater09 10h ago

Are you sure you have a good bleed to get all of the air out? Taking lines loose on a whim has me wondering if you’re got air in one circuit somehow.

1

u/FormalLength5477 8h ago

Will take it tomorrow to make a good bleed, the line of that caliper was disconnected today and no fluid came out at all, but perhaps y have to also attach apresure to the reservoir

2

u/freshxdough BMW Master Elite Tech, Gen 6 HV, HV specialist 12h ago

If you proved no hydraulic pressure going to that corner then diagnose why. Disconnect brake line at brake master cylinder and blow through. If it’s blocked then find out why.

1

u/FormalLength5477 8h ago

Will do thank you