BBUS unit dead?

Rick-sta · 12th February 2021, 17:23

Are the BBUS units known to completely die? One day mine was working fine and then suddenly it stopped sounding completely. The sounder is now silent when the alarm is going off, and doesn't make a sound if I attempt to lock the car with the driver's door open.

Headlamp washers still work fine, not sure they would stop working if the sounder failed?

Just wanted to ask before I buy a replacement sounder incase it isn't that?

Cheers
Rick

malagas · 12th February 2021, 17:40

The washers work well even without the BBus, when I set mine up I had the normal siren and they worked. One of mine only sounds in half a cycle (low to high), any day I have to replace it.
It seems to me that yours needs replacement ...

stevestrat · 12th February 2021, 18:17

After I bought the V8 discovered the BBUS was stone dead. Can't recall what drew my attention to it. Strangely enough I actually had a spare one, bought for but never fitted to the other ZT I had at the time.

clf · 12th February 2021, 19:31

Quote:

Originally Posted by Rick-sta

Are the BBUS units known to completely die? One day mine was working fine and then suddenly it stopped sounding completely. The sounder is now silent when the alarm is going off, and doesn't make a sound if I attempt to lock the car with the driver's door open.

Headlamp washers still work fine, not sure they would stop working if the sounder failed?

Just wanted to ask before I buy a replacement sounder incase it isn't that?

Cheers
Rick

Looking at the condition of mine when I opened it up, I imagine it could just stop. But replacements are easy and cheap via some BMWs and Binis. Since theirs appear to be relatively well shielded, they seem to be quite reliable as a second hand option (my own going so far for past 5 or 6 years now).

BMW example £11.99 HERE

ceedy · 12th February 2021, 23:24

I mended ours it had water leaking in and corroded off the battery wires

Rick-sta · 15th February 2021, 14:52

Thanks all. I'll have to get mine off and take a look at it when I get a chance.

Cheers

Rick-sta · 19th February 2021, 16:08

got the BBUS unit off today and opened it up and it literally looks brand new inside, perfectly clean and no corrosion or anything. But it's definitely dead sadly as I tested it on our 75 and it still didn't work.

Ordered the one in the Link you sent Alan thank you

clf · 19th February 2021, 16:36

Quote:

Originally Posted by Rick-sta

got the BBUS unit off today and opened it up and it literally looks brand new inside, perfectly clean and no corrosion or anything. But it's definitely dead sadly as I tested it on our 75 and it still didn't work.

Ordered the one in the Link you sent Alan thank you

For the cost of them, I didnt see any point in trying to repair. But I did find threads regarding the batteries dying, and no longer taking a charge. Trying to find batteries proved impossible though, but i am sure something could be made up, but they would need to be chargeable (which is when cost becomes an issue).

Sent from my SM-A600FN using Tapatalk

Rick-sta · 19th February 2021, 16:53

Quote:

Originally Posted by clf

For the cost of them, I didnt see any point in trying to repair. But I did find threads regarding the batteries dying, and no longer taking a charge. Trying to find batteries proved impossible though, but i am sure something could be made up, but they would need to be chargeable (which is when cost becomes an issue).

Sent from my SM-A600FN using Tapatalk

The batteries inside the unit reminded me of my old RC cars in the 90's, looked very similar.

12th February 2021, 17:23	#1
Rick-sta This is my second home MG ZT 2.0 CDTI+ in Typhoon, MG TF 135 in Typhoon & Rover 75 Connoisseur CDTI SE in Pearl Black Join Date: Oct 2012 Location: Norfolk Posts: 7,534 Thanks: 2,718 Thanked 2,827 Times in 1,462 Posts	BBUS unit dead? Are the BBUS units known to completely die? One day mine was working fine and then suddenly it stopped sounding completely. The sounder is now silent when the alarm is going off, and doesn't make a sound if I attempt to lock the car with the driver's door open. Headlamp washers still work fine, not sure they would stop working if the sounder failed? Just wanted to ask before I buy a replacement sounder incase it isn't that? Cheers Rick __________________ How to retrofit Cruise Control on a diesel with no OEM wiring in place: Link How to retrofit heated electric memory seats with no OEM wiring in place: Link How to operate FBH and ATC via text Link How to restore cloudy projector headlights Link

12th February 2021, 17:40	#2
malagas Regular poster Rover 75 Saloon 2.0 CDT Club, Rover 75 Saloon 2.0 CDTi Contemporary Join Date: Oct 2018 Location: Leiria Posts: 78 Thanks: 330 Thanked 73 Times in 21 Posts	The washers work well even without the BBus, when I set mine up I had the normal siren and they worked. One of mine only sounds in half a cycle (low to high), any day I have to replace it. It seems to me that yours needs replacement ... __________________ Enjoy your LIFE David

12th February 2021, 18:17	#3
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,479 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	After I bought the V8 discovered the BBUS was stone dead. Can't recall what drew my attention to it. Strangely enough I actually had a spare one, bought for but never fitted to the other ZT I had at the time. __________________ Steve T4 Location Map

12th February 2021, 23:24	#5
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,076 Thanks: 916 Thanked 1,214 Times in 768 Posts	I mended ours it had water leaking in and corroded off the battery wires __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's Last edited by ceedy; 12th February 2021 at 23:24.. Reason: My

15th February 2021, 14:52	#6
Rick-sta This is my second home MG ZT 2.0 CDTI+ in Typhoon, MG TF 135 in Typhoon & Rover 75 Connoisseur CDTI SE in Pearl Black Join Date: Oct 2012 Location: Norfolk Posts: 7,534 Thanks: 2,718 Thanked 2,827 Times in 1,462 Posts	Thanks all. I'll have to get mine off and take a look at it when I get a chance. Cheers __________________ How to retrofit Cruise Control on a diesel with no OEM wiring in place: Link How to retrofit heated electric memory seats with no OEM wiring in place: Link How to operate FBH and ATC via text Link How to restore cloudy projector headlights Link

19th February 2021, 16:08	#7
Rick-sta This is my second home MG ZT 2.0 CDTI+ in Typhoon, MG TF 135 in Typhoon & Rover 75 Connoisseur CDTI SE in Pearl Black Join Date: Oct 2012 Location: Norfolk Posts: 7,534 Thanks: 2,718 Thanked 2,827 Times in 1,462 Posts	got the BBUS unit off today and opened it up and it literally looks brand new inside, perfectly clean and no corrosion or anything. But it's definitely dead sadly as I tested it on our 75 and it still didn't work. Ordered the one in the Link you sent Alan thank you __________________ How to retrofit Cruise Control on a diesel with no OEM wiring in place: Link How to retrofit heated electric memory seats with no OEM wiring in place: Link How to operate FBH and ATC via text Link How to restore cloudy projector headlights Link