Tapping noise brake pump

Chief inspector · Oct 19th, 2018, 20:41

I dont know whether I didn’t notice before, but now I have its doing my nut in.

When using ACC, Pilot Assist or even the footbrake hold I’m getting this Woodpecker style tapping as the car brakes, its not the relay click from the dashboard that does one or two clicks as it adjusts speeds, this is more like 8-10 rapid taps in about 2 seconds.

Very noticeable when the car is navigating in stop start queues.

I’m assuming its the brake pump as its related to bring the car to a halt, its not the whirring od the parking brake motors, its more like Woody Woodpecker under the bonnet.

Anyone else got this, or maybe a fault?

Fursty Ferret · Oct 19th, 2018, 22:18

It's normal. Turn the radio up.

NickV90 · Oct 19th, 2018, 22:33

I get this but only when using the auto brake hold thingy in traffic jams. I can feel it through the pedal. I assume it is a stepper motor taking up the strain on the brake pedal in rather a crude fashion. I usually leave the auto hold off mainly for that reason

Chief inspector · Oct 20th, 2018, 12:19

Quote:

Originally Posted by NickV90

I get this but only when using the auto brake hold thingy in traffic jams. I can feel it through the pedal. I assume it is a stepper motor taking up the strain on the brake pedal in rather a crude fashion. I usually leave the auto hold off mainly for that reason

Could be that yes, I use the auto hold all the time.

nu11eaf · Oct 20th, 2018, 13:13

It does not happen to my XC90, wonder why it does on your V90.

Chief inspector · Oct 20th, 2018, 14:01

Quote:

Originally Posted by nu11eaf

It does not happen to my XC90, wonder why it does on your V90.

I dont think it done it when it was new, started at about 4 months, hopefully I havent alerted you to it, you now hear it and does your nut in!

Only does it during automated braking.

Sceptre123 · Oct 20th, 2018, 14:16

My car does this, its very annoying. Strangely it never does it when its at the Volvo dealer!

It seems to be most frequent when stopping gently and then not removing my foot immediately.

Does anyone know what it is?

nu11eaf · Oct 20th, 2018, 15:01

Quote:

Originally Posted by Chief inspector

I dont think it done it when it was new, started at about 4 months, hopefully I havent alerted you to it, you now hear it and does your nut in!

Only does it during automated braking.

Cant hear anything other than lots of road/tyre noise in my car.

Chief inspector · Oct 20th, 2018, 16:58

Quote:

Originally Posted by nu11eaf

Cant hear anything other than lots of road/tyre noise in my car.

All the talk of that on here is the main reason I walked right by the XC90 To look at the V90 after parting ways with the XC60. It’s obviously cheaper as well, more economic and I didn’t need row 3 cementing the opinion.

NickV90 · Oct 20th, 2018, 17:34

Mine has done it from new. And every time. Never thought to ask the dealer as I thought it was a feature.

Oct 19th, 2018, 20:41	#1
Chief inspector Master Member Last Online: Mar 11th, 2022 08:02 Join Date: Feb 2015 Location: Global Village	Tapping noise brake pump I dont know whether I didn’t notice before, but now I have its doing my nut in. When using ACC, Pilot Assist or even the footbrake hold I’m getting this Woodpecker style tapping as the car brakes, its not the relay click from the dashboard that does one or two clicks as it adjusts speeds, this is more like 8-10 rapid taps in about 2 seconds. Very noticeable when the car is navigating in stop start queues. I’m assuming its the brake pump as its related to bring the car to a halt, its not the whirring od the parking brake motors, its more like Woody Woodpecker under the bonnet. Anyone else got this, or maybe a fault? __________________ 2018 V90 Momentum Pro

Oct 20th, 2018, 13:13	#5
nu11eaf Premier Member Last Online: Yesterday 22:49 Join Date: Mar 2013 Location: Yorkshire man living in County Durham	It does not happen to my XC90, wonder why it does on your V90. __________________ XC90 Inscription D5 Power pulse, 2017 MY, Savile grey, Blond Nappa, Leather dash/door tops, Walnut inlays, Dark tinted windows, Air suspension, Bliss/Cross traffic alert, Xenium/7 seat comfort/Family/Winter packs, 4 zone climate, Heated rear seats.

Oct 19th, 2018, 22:18	#2
Fursty Ferret Senior Member Last Online: Feb 26th, 2024 16:44 Join Date: Jul 2015 Location: Manchester	It's normal. Turn the radio up.

Oct 19th, 2018, 22:33	#3
NickV90 Member Last Online: Sep 1st, 2019 08:29 Join Date: Apr 2017 Location: Ipswich	I get this but only when using the auto brake hold thingy in traffic jams. I can feel it through the pedal. I assume it is a stepper motor taking up the strain on the brake pedal in rather a crude fashion. I usually leave the auto hold off mainly for that reason

Oct 20th, 2018, 14:16	#7
Sceptre123 Junior Member Last Online: Apr 10th, 2023 15:27 Join Date: Sep 2017 Location: York	My car does this, its very annoying. Strangely it never does it when its at the Volvo dealer! It seems to be most frequent when stopping gently and then not removing my foot immediately. Does anyone know what it is?

Oct 20th, 2018, 17:34	#10
NickV90 Member Last Online: Sep 1st, 2019 08:29 Join Date: Apr 2017 Location: Ipswich	Mine has done it from new. And every time. Never thought to ask the dealer as I thought it was a feature.

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