How to disable parking brake beep on 2000 ml320? - Mercedes-Benz Forum
 
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post #1 of 9 (permalink) Old 08-08-2019, 10:05 PM Thread Starter
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How to disable parking brake beep on 2000 ml320?

I had replaced the ABS pump on my 2000 ml320. For some issues that are still being diagnosed, the ABS light is still on and on top of that the parking brake light stays on even after disengaging it. While driving, it is very annoying to constantly hear the beep. I would like to disable the beep while I am troubleshooting everything. Can someone please tell me how to?
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post #2 of 9 (permalink) Old 08-08-2019, 11:27 PM
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post #3 of 9 (permalink) Old 08-08-2019, 11:41 PM Thread Starter
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@art_arev That is already done and now I am troubleshooting the wiring. But it take me a week to finish that. Meanwhile, I need to disable the beep if possible.
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post #4 of 9 (permalink) Old 08-09-2019, 12:08 AM
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Wiring? Why would you want to troubleshoot the wiring when your problem is C1401? I very much doubt you can disable the beep without fixing the issue.

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post #5 of 9 (permalink) Old 08-09-2019, 01:43 AM
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Check the parking brake switch is working.
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post #6 of 9 (permalink) Old 08-09-2019, 07:03 AM
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Quote:
Originally Posted by sbasi View Post
@art_arev That is already done and now I am troubleshooting the wiring. But it take me a week to finish that. Meanwhile, I need to disable the beep if possible.
Brother:

I can relate I've been slowly working to the root cause of this same (stupid) Intermittent beep.

Problem is there appear to be several root causes, and no way to "turn it off".

[unless someone can locate beep.'speaker' ?]

So, check codes & work to remedy them:

Check Emergency brake activation switch like Matt said.

Check brake fluid level & sensor in cap.

Pull ABS wheel sensors - 3 of my 4 had some crud built up inside so clean thoroughly used toothbrush & compressed air.

I'm now got a new BLS brake light switch on order it can go bad internally
& contribute to the mess.

Since I've done these things it does it far less often.

I reset it by pulling over briefly turn off engine (key out), count to 3 then restart & drive - most often if cannot do it again same drive cycle.

These insane complexities are the bane of w163's - and on bad days have me longingly looking at Sequouas & Explorers wondering if they give their owners fits @ 10 years/ 100k and up ?!

David in Texas

Gone, and fondly remembered:

1975 240D - 4 speed manual, power nothing
1984 190E 2.3 - Cute, reliable & slow
1983 300SD - Great highway tourer, 28mpg

Here & greatly appreciated:

2000 E 320 Wagon -
2002 ML 500 - Finally got one !

Last edited by 2000 E 320 White Wagon; 08-09-2019 at 07:06 AM.
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post #7 of 9 (permalink) Old 08-09-2019, 05:51 PM
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Ok I got my same issue resolved see post #18 here:

https://www.benzworld.org/forums/w16...1323891?page=2

Gone, and fondly remembered:

1975 240D - 4 speed manual, power nothing
1984 190E 2.3 - Cute, reliable & slow
1983 300SD - Great highway tourer, 28mpg

Here & greatly appreciated:

2000 E 320 Wagon -
2002 ML 500 - Finally got one !
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post #8 of 9 (permalink) Old 08-09-2019, 06:45 PM
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Originally Posted by 2000 E 320 White Wagon View Post
Ok I got my same issue resolved see post #18 here:

https://www.benzworld.org/forums/w16...1323891?page=2
There are only 10 posts in the link. No post #18

1972 280SEL 4.5
1999 ML320
2000 E320
2003 ML350
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post #9 of 9 (permalink) Old Today, 02:30 PM
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Exclamation Resolved my Brake Light Warning & Beeping heres how...

Witek: Right you are, I must have grabbed the wrong thread link !


Sbasi:

If you're still 'reading the mail' I thought I'd update you. My super irritating 'Brake light warning with Beeping' is gone for good.

Here was the resolution:

My ABS Wheel sensors were dirty where they seat into the hub recess.

And perhaps the bolt that mounts each sensor had corroded as well. My ML500 being at 17 years & 152,000 miles - probably these had never been removed & cleaned.

So, there was gunk like dirt & crust in the hole just between sensor head & blocking it's view of the toothed ring (is it magnetic or just ridged ?) that mounts to hub.

Solution was to use toothbrush in hole, scotchbrite to clean sensor tip & metal 'contact ring' around bolt hole.

I then used compressed air to gently blow out hole in hub, then remount sensor using E10 Torx socket.

Nothing hard about it.

I did use my Mercedes 'Carsoft' laptop to erase all the codes in the ESP / Traction Control modules.

Until those are erased, the ECU might not prevent the beeping OR turn off any illuminated warning lights on dash.

Erasing codes requires a 'Pro Level' scanner - the Autel MD802 or MD805 seem to be the best one going that's pretty cheap $150-ish on Amazon.

Keep in mind this is a step beyond just having generic OBD2 codes read at an Auto Parts store.

Also note, many shops would just automatically replace the Sensors, and at some considerable cost.

I figured cleaning them was both cheaper quicker, too.

I'm going on my 3rd straight day of driving the ML500 around and still marvel at how nice, quiet & stress free it is to see a dashboard with NO LIGHTS LIT & NO BEEPING in my ears.

I could get used to this....

David

Last edited by 2000 E 320 White Wagon; Today at 02:32 PM.
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