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2
4x4 abs ebv dsc failure
Hi Dave hope your well i mentioned it to the garage when u told me last time and they said they looked fine but when I looked in that rear compartment you could tell water had been in there im going back up there tomorrow to show them your post and just get them to sort them just to eliminate this problem as theve had the car roughly 9weeks and im over 1000 pound in on parts and labour -
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4x4 abs ebv dsc failure
Morning Steven I actually posted pictures of the cause for K-bus faults The problem is in the boot mainly so the first thing needed is to fix the bus faults, only then will you be able to clear down faults and find the cause of the issue if indeed you have one. Then of course there is the uncomfortable conversation with the garage about who should pay for all the unnecessary works and component changes. So again In the pictures you can see cable splices in the main wiring loom in the boot the loom is located on the boot floor below the Fuse board in the right hand cubby you will need to remove a bit of trim to get to it BMW make these splice/joints by twisting and compressing the join then covering it with a clear plastic sleeve. Moisture gets in and the black stain you see through the clear plastic is corrosion. The pic Cable splices shows the K-bus on the left of the picture Yellow/green Orange with mine they just fell apart so I remade them with soldered joins and shrink wrap after digging I re-made all the joins you see in the pictures That is where you need to start Your Garage seem clueless show them these picture tell them that is where the issue starts and hopefully ends then they can clear the K-bus and you may have a chance of sorting any issues that remain. If the control units they have changed have not been registered to the chassis they may need doing but start with the K-bus Personally I would DIY so you know its done Dave -
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Service history
Hi All I've just noticed any error in my first post. The car is looked at was an X3, bot an X4. The rest of the post is correct. Regards Cliff -
12
Help with 2014 X3 RDC and TPMS
Morning JC Bit of a history lesson coming up 😅 A generic scanner won't help much as it will only read Key components DME maybe Transmission etc, most of the high end manufacturers use a dedicated Bus system to allow communication between control units. Due competition laws in the US Manufacturers had to allow some access hence the Generic scanners can see the key components indicate a fault not necessarily the cause. Early systems often ended up with people changing parts until the issue was fixed or they got rid of the car. As an example a Misfire could be a sensor issue, an Air/Vacuum leak or a fuel pressure issue. I have always enjoyed maintaining my own cars so have gathered a comprehensive tool kit since the late 80's diagnostics became more and more important so In my home garage I have an old Windows 7 laptop that now runs diagnostic programs for cars I have owned Mercedes Star, Volvo, Range Rover, Toyota, Subaru, and of course BMW. Early BMW's used I-bus communication so I brought a copy of BMW 1.4.0 (£20) which was a revelation, it showed my 2001 4.4 X5 had 70+ control units several with attendant sensors it also allowed me to alter or set Comfort functions that normally were Dealer only and charged appropriately £££ 🤣. When BMW moved to K-bus and MOST (2006>) it required an upgrade in Diagnostics to INPA (nothing to do with restoring Dealer exclusivity of course) Happily the hackers soon had copies available and the same is true of the latest iteration ISTA which lives on my laptop in the garage 😁 My current E70 X5 has 97 control units plus sensors (I believe your X3 is similar) with my TPMS on the cars screen it will warn if a tyre looses pressure but with INPA/ISTA I can see and set pressure differentials by % INPA/ISTA will tell me if it is a sensor problem or control module problem. I can interrogate individual sensors and get Part numbers etc. The program also has WIS (workshop information system) TIS (technical information system) and Wiring diagrams. New or exchange control units can be Programmed to the car so all Dealer functions are covered. My copy of INPA/ISTA cost £100 if I recall and over the last 10 years has saved me and friends and family many times that. My last issue was a rear suspension problem ISTA told me Rear Left ride height sensor continuity on inspection the plug had started to disintegrate so replacement plug and re-pinned total cost £11 and a couple of hours of my time There are many systems available now Autel, i-Carsoft, Foxwell and several others all are around the £100 mark though as always if you have deep pockets you can pay more 😁 Good Luck hope the above is helpful Dave -
12
Help with 2014 X3 RDC and TPMS
Thanks for the reply, Greydog. I also have a generic ODBC scanner. I am going to give it a try to see if I could find more details of the error code. Since I have already replaced all 4 new tire sensors and a used RDC, I am not sure if the issue is the RDC. I am also interested to learn more about the BMW INPA/ISTA. Do you have a link by any chance? Many thanks!
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