Please help
- Thread starter RAYK47
- Start date
Classical canbus related issue…
One system is causing this..its failure causes the canbus to go crazy..continuous wiper motion is a classical indicator.
Full diagnostic check required..
Could be a dsc/abs ECU failure or a wiring issue..amongst many ..
Often needs an auto electrician as these are tricky to troubleshoot..
One system is causing this..its failure causes the canbus to go crazy..continuous wiper motion is a classical indicator.
Full diagnostic check required..
Could be a dsc/abs ECU failure or a wiring issue..amongst many ..
Often needs an auto electrician as these are tricky to troubleshoot..
Thanks B21
When the AA got there all the errors had cleared from the onboard computer and car was driving normally. However the engine light stayed on (with the errors above). He was not able to clear them.
So I decided to get the car home, drove home 44miles without any issues at all, engine light remains on though.
Time to get someone to look at it I guess.
When the AA got there all the errors had cleared from the onboard computer and car was driving normally. However the engine light stayed on (with the errors above). He was not able to clear them.
So I decided to get the car home, drove home 44miles without any issues at all, engine light remains on though.
Time to get someone to look at it I guess.
RAYK47 said:
Yes these faults are the most challenging….they often are actually in one area but ‘throw’ faults elsewhere..as I said needs a decent auto electrician who knows canbus to probably successfully troubleshoot..otherwise you are into just swapping parts till it goes away..
Have you got a decent code reader ?
dumaurier7
Member
The search button is your friend! 
https://z4-forum.com/forum/viewtopic.php?t=130029
https://z4-forum.com/forum/viewtopic.php?t=130029
dumaurier7 said:The search button is your friend!
The error looks very similar but it all seemed to clear itself after about an hour switched off. All that remained was the engine management light and the errors i posted above.
matsmith749
Active member
Tip #1 - It's time to stop thinking about getting a code reader. Get one. Insta + laptop if you are full nerd (it's probably the best), something handheld if you are over 50 & don't know how to spell linux or vm.
Tip #2 - Check your battery. Properly. If this is a 10 year old car on it's original battery, all you might need is a new battery. These cars go absolutely mental with batteries in poor condition, and the laws of physics dictate that any battery 10 years old is absolutely shot.
Tip #3 - thank me later
Tip #2 - Check your battery. Properly. If this is a 10 year old car on it's original battery, all you might need is a new battery. These cars go absolutely mental with batteries in poor condition, and the laws of physics dictate that any battery 10 years old is absolutely shot.
Tip #3 - thank me later
RAYK47 said:
ISTA on a laptop is very good if yiu can manage to install it/understand it/use it..
Bimmergeeks Protool goes almost the full distance of ISTA and more user friendly ..anything you learn from ISTA can help with Protool so they are not mutually exclusive.
I have both…
The big big advantage of Protool being Android based is that I keep a cheap android phone in the car so you can do roadside assessments and resets..saved my bacon when the water pump failed 500 miles from home..
So get both!
dumaurier7
Member
RAYK47 said:dumaurier7 said:The search button is your friend!
The error looks very similar but it all seemed to clear itself after about an hour switched off. All that remained was the engine management light and the errors i posted above.
My car did the same but without the engine check light. After having a proper scan done with ISTA the cause of the issue was found to be the ABS/DSC module which would just stop communicating on the CAN bus network. As actual vehicle speed is broadcasted on the CAN by this module, this would have a negative impact on a number of other modules causing them to go into error as they require a speed input to do what they do, this is why the speedo goes to zero and the wipers turn on before all the other craziness starts.
dumaurier7
Member
B21 said:
Although Pro Tool is great it did not detect this error exclusively because everything was in fault/alarm at the same time, ISTA showed the entire architecture of the system, and the status of all modules which showed as green but the ABS one was red and stating No Communication.
Thanks guys i will look to get INSTA and scan this week.
To answer a couple of the questions: -
- AA engineer checked the battery and alternator and said they were both fine, he also commented that it was a VARTA battery and was decent and was definitely not the original (he did comment that it was from the RAC though). Is there a certain minimum capacity battery that we should be using?
- There is no water ingress in the boot but i did have some about a month ago under the drivers seat.
To answer a couple of the questions: -
- AA engineer checked the battery and alternator and said they were both fine, he also commented that it was a VARTA battery and was decent and was definitely not the original (he did comment that it was from the RAC though). Is there a certain minimum capacity battery that we should be using?
- There is no water ingress in the boot but i did have some about a month ago under the drivers seat.
dumaurier7 said:
Yes ISTA goes that bit further…but unless you carry a laptop with you the convenience of having Protool with you , especially if like me most of your outings are 2-3 day + affairs hundreds of miles from home is a big plus…so given ISTA is free it’s Protool AND ISTA…there are things that ISTA struggles with that are a breeze in Protool so it a not a one way street anyway..
does anyone know the correct cable for E89? My understanding is it has to be DCAN and with USB connector.
https://www.amazon.co.uk/HanRainToo...nid=419152031&sprefix=bmw+dcan,aps,81&sr=8-8
Also the ISTA software is not widely available. It is on Bimmerdiagnostics web site but does not specifically list E89 as compatible.
https://www.bimmerdiagnostics.com/#xl_HeadingAnchor:58wudRm
https://www.amazon.co.uk/HanRainToo...nid=419152031&sprefix=bmw+dcan,aps,81&sr=8-8
Also the ISTA software is not widely available. It is on Bimmerdiagnostics web site but does not specifically list E89 as compatible.
https://www.bimmerdiagnostics.com/#xl_HeadingAnchor:58wudRm
