ISTA+ ABS Bleed

boba7523 · 01-07-2024, 09:01 PM

Hi guys,

I'm wondering if I need a voltage regulator when I perform ABS bleed procedure through ISTA+.

Or can I just just charge the battery to 100% before starting the procedure?

I've heard that ISTA+ can exit procedure if there is sudden drop in voltage or something.....

Thank you!

M3SQRD · 01-08-2024, 06:45 AM

It’s a quick procedure so a regularly charged battery is plenty.

Wanted_M · 01-09-2024, 03:45 PM

I've done it with a trickle charger, worked fine.

jaylazy2020 · 01-09-2024, 05:31 PM

I recently had brakes changed and new fluid with braided lines but pedal feels spongy

I don’t think they bothered with this procedure

Woudl this procedure help ensure any air from the system is gone?

Wanted_M · 01-09-2024, 07:59 PM

Quote:

Originally Posted by jaylazy2020

I recently had brakes changed and new fluid with braided lines but pedal feels spongy

I don’t think they bothered with this procedure

Woudl this procedure help ensure any air from the system is gone?

Yes

jaylazy2020 · 01-09-2024, 08:00 PM

Quote:

Originally Posted by Wanted_M

Yes

Thanks.

I’ll have to go back to them. Annoying that they didn’t even mention it.

M3SQRD · 01-10-2024, 08:30 AM

Quote:

Originally Posted by jaylazy2020

I recently had brakes changed and new fluid with braided lines but pedal feels spongy

I don’t think they bothered with this procedure

Woudl this procedure help ensure any air from the system is gone?

Yes. Sounds like air is in the DSC/ABS lines.

jaylazy2020 · 01-10-2024, 08:32 AM

Quote:

Originally Posted by M3SQRD

Yes. Sounds like air is in the DSC/ABS lines.

Cheers.

If I’m stationery and I press the brakes hard they continue to compress and the pedals moves further away rather than hitting a brick wall.

Feels like it’s crushing the air in lines

M3SQRD · 01-10-2024, 08:38 AM

Quote:

Originally Posted by jaylazy2020

Cheers.

If I’m stationery and I press the brakes hard they continue to compress and the pedals moves further away rather than hitting a brick wall.

Feels like it’s crushing the air in lines

Definitely sounds like air is in the system. Could’ve been a poor brake bleed with air in calipers/brake lines and/or air in DCS/ABS lines.

01-07-2024, 09:01 PM	#1
boba7523 Enlisted Member 7 Rep 47 Posts Drives: m2c Join Date: Dec 2023 Location: socal iTrader: (0)	ISTA+ ABS Bleed - Do I Need Battery Charger? Hi guys, I'm wondering if I need a voltage regulator when I perform ABS bleed procedure through ISTA+. Or can I just just charge the battery to 100% before starting the procedure? I've heard that ISTA+ can exit procedure if there is sudden drop in voltage or something..... Thank you!
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01-08-2024, 06:45 AM	#2
M3SQRD Major General 2164 Rep 5,548 Posts Drives: E92 M3,G20 330ix,F22 240iX,F82 Join Date: Jun 2009 Location: Mid-Atlantic iTrader: (11)	It’s a quick procedure so a regularly charged battery is plenty.
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01-09-2024, 03:45 PM	#3
Wanted_M Captain 759 Rep 950 Posts Drives: Frozen Blue M4CS Join Date: Jul 2009 Location: Norcal iTrader: (2)	I've done it with a trickle charger, worked fine. __________________ M4CS Frozen Blue ARM DP's/Resonated Mid-pipe \| SPL links \| Hotchkis bars \| JRZ RS2/camber plates \| K&N \| Koyorad HX \| Powerflex purple \| Rouge \| Spiegler \| Speed Eng. snorkel \| Vargas CBC/hub \| Wagner IC \| xHP \| Xpel stealth ppf
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01-09-2024, 05:31 PM	#4
jaylazy2020 Captain 255 Rep 610 Posts Drives: BMW F82 Comp Join Date: Oct 2020 Location: Dublin, Ireland iTrader: (0)	I recently had brakes changed and new fluid with braided lines but pedal feels spongy I don’t think they bothered with this procedure Woudl this procedure help ensure any air from the system is gone?
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