Bbus problem

rich17865 · 25th June 2014, 06:57

I had recently changed to a bbus, with new zcs coding, plugged in and working

I am now suffering from the alarm going off randomly when unlocking the car. Sometimes it does, sometimes it doesn't.

The bcu is not storing any reason for the triggers, it doesn't acknowledge that the alarm has sounded.

Any ideas?

rich17865 · 26th June 2014, 07:10

No pointers anyone?

rich17865 · 26th June 2014, 17:26

One last bump before I go find out for myself

clf · 26th June 2014, 21:57

Have you got Xenons, or more specifically the washers? It was suggested to me, that my washer problem could be related to the Bbus being faulty as they are somehow linked (mine were both faulty as it turned out). If you do not have them fitted, could they be expecting the washers to be in the circuit?

I also assume you have checked for issues with the bonnet and boot locks, as well as the ultrasonic sensors too?

rich17865 · 26th June 2014, 22:22

Yes, the only change was the addition of the bbus in the zcs coding and subsequently plugging it in. It worked ok for a few days, then rogue alarms started.

Switches are ok, there is no indication in either T4 or on the ipk led that the alarm has triggered.

Could be a faulty sounder I suppose?

clf · 26th June 2014, 23:27

Quote:

Originally Posted by rich17865

Yes, the only change was the addition of the bbus in the zcs coding and subsequently plugging it in. It worked ok for a few days, then rogue alarms started.

Switches are ok, there is no indication in either T4 or on the ipk led that the alarm has triggered.

Could be a faulty sounder I suppose?

sounders are cheap and plentiful on eBay. I got a bmw one for £9delivered with the shield too.

I don't know nor understand zcs coding, but could it be flawed somewhere?

additionally, since it seemingly worked ok first, could weather be a factor?

Jules · 27th June 2014, 01:16

Could be unrelated Rich?

Check multi plugs on each door loom.
I've had the green gunge in a couple over the years causing false alarms.
Fill plugs with silicone grease to stop water/condensation ingress.

rich17865 · 27th June 2014, 06:52

I may well try another sounder, there is a crack in this one.

It was the first hot day that it started playing up so I thought weather could be playing a factor. But it is now doing it when it is cold too.

Thanks Jules, I think as I tinker with things, I should be using silicone grease on multiplugs as I reassemble things. I think rot is going to start to play a bigger part in problems with our cars.

rich17865 · 27th June 2014, 18:49

I have bought another bbus from ebay for a fiver including postage. Bargain

Will give that a go and see how I get on.

Mike Noc · 27th June 2014, 19:37

Rich one thing puzzles me....why retrofit a BBUS?

25th June 2014, 06:57	#1
rich17865 This is my second home Transit Connect Join Date: Feb 2011 Location: Crewe Posts: 9,532 Thanks: 868 Thanked 1,619 Times in 1,095 Posts	Bbus problem I had recently changed to a bbus, with new zcs coding, plugged in and working I am now suffering from the alarm going off randomly when unlocking the car. Sometimes it does, sometimes it doesn't. The bcu is not storing any reason for the triggers, it doesn't acknowledge that the alarm has sounded. Any ideas?

27th June 2014, 01:16	#7
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Could be unrelated Rich? Check multi plugs on each door loom. I've had the green gunge in a couple over the years causing false alarms. Fill plugs with silicone grease to stop water/condensation ingress. __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

26th June 2014, 07:10	#2
rich17865 This is my second home Transit Connect Join Date: Feb 2011 Location: Crewe Posts: 9,532 Thanks: 868 Thanked 1,619 Times in 1,095 Posts	No pointers anyone?

26th June 2014, 17:26	#3
rich17865 This is my second home Transit Connect Join Date: Feb 2011 Location: Crewe Posts: 9,532 Thanks: 868 Thanked 1,619 Times in 1,095 Posts	One last bump before I go find out for myself

26th June 2014, 21:57	#4
clf This is my second home MG ZT CDTi Join Date: Jan 2014 Location: carrick Posts: 7,859 Thanks: 3,494 Thanked 2,657 Times in 1,973 Posts	Have you got Xenons, or more specifically the washers? It was suggested to me, that my washer problem could be related to the Bbus being faulty as they are somehow linked (mine were both faulty as it turned out). If you do not have them fitted, could they be expecting the washers to be in the circuit? I also assume you have checked for issues with the bonnet and boot locks, as well as the ultrasonic sensors too?

26th June 2014, 22:22	#5
rich17865 This is my second home Transit Connect Join Date: Feb 2011 Location: Crewe Posts: 9,532 Thanks: 868 Thanked 1,619 Times in 1,095 Posts	Yes, the only change was the addition of the bbus in the zcs coding and subsequently plugging it in. It worked ok for a few days, then rogue alarms started. Switches are ok, there is no indication in either T4 or on the ipk led that the alarm has triggered. Could be a faulty sounder I suppose?

27th June 2014, 06:52	#8
rich17865 This is my second home Transit Connect Join Date: Feb 2011 Location: Crewe Posts: 9,532 Thanks: 868 Thanked 1,619 Times in 1,095 Posts	I may well try another sounder, there is a crack in this one. It was the first hot day that it started playing up so I thought weather could be playing a factor. But it is now doing it when it is cold too. Thanks Jules, I think as I tinker with things, I should be using silicone grease on multiplugs as I reassemble things. I think rot is going to start to play a bigger part in problems with our cars.

27th June 2014, 18:49	#9
rich17865 This is my second home Transit Connect Join Date: Feb 2011 Location: Crewe Posts: 9,532 Thanks: 868 Thanked 1,619 Times in 1,095 Posts	I have bought another bbus from ebay for a fiver including postage. Bargain Will give that a go and see how I get on.

27th June 2014, 19:37	#10
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,547 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Rich one thing puzzles me....why retrofit a BBUS?