Here's How a $40 Part Ruined this Once $90,000 BMW X6M's Entire Electrical SystemNov 22, 2021
so you may have noticed youtube got rid of the dislike counter and wonder why everytime i release a new video in seconds some snapper always hits the thumbs down button it hasn't even been long enough to see enough. the video to know that they won't actually like it, but they pushed the button anyway now that the counter is gone, what are these people going to do? I mean, in most cases, I would assume that
thissmall group didn't have anything really valuable to look forward to. except i don't like my video within minutes of it coming out and even though you can still hit the button you can't see how many others are of the same mindset on the other hand sometimes people hit
thisbutton because they really find something wrong with the video and that's great too I'll be honest I've hit the dislike button
onceor 200 before but only when really necessary tell me in the comments why you think YouTube removed this feature even though we all really know why youtube removed this feature anyway.
I have good news for nancy and youtube negative reviewers who deserve to use this button on my channel. I really crave it, it's totally your choice, but if you're so inclined to hit the like button, I guarantee I'll try to finish at least one project by next week. A decade ago, if you saw the initial video of this car, you know it has some weird
electricalissue that renders it basically useless. do the math I'm almost an eighth of the way to my second divorce anyway if you want the full story on this really insanely speckled lemon law title recapture twin turbo x6m go ahead and pause this video and See the first one on the link about the car currently has all the electronics going haywire and I'm scared to even drive it as it will randomly throw itself into the park while moving.
More Interesting Facts About,
here s how a 40 part ruined this once 90 000 bmw x6m s entire electrical system...
We did an initial code read and found a bunch of bugs in the can bus network and after a few days of troubleshooting I came up short trying to find a solution so I contacted my friend super mario who he is a european car
electricalguru and the video message mario sent me gave me a step by step tutorial on how we can pinpoint the exact electrical fault in our bmw and
hereis a number one version of cliff notes you get an oscilloscope which is a multi hundred dollar electrical test tool and i have no other way to describe it other than that because i barely know how it works number two take that oscilloscope and test the can bus network lines in the car , they're pretty easy to find, they run on just about every module that runs on the number three cam bus network with key on, engine off. and it starts taking the modules out of the car, so it's going to pull power to every module that runs on the can bus network and when the problem pulls out of the car, whether it's a failed line or a failed module, the wavelength is going to change on the oscilloscope and you found your problem personally i have some little problems with this method number one you must have an oscilloscope number two you must know how an oscilloscope works number three think about how time consuming it might be to disconnect each module from the car to find your problem i mean it's just a very time consuming process if you consider just taking out that module in the passenger side footwell area which took me 20-30 minutes for one module so multiply that times 10 potentially 15 no matter how many it takes to find your problem don't get me wrong this is the correct way to do this this is the text book way of doing this but i'm a bit more of a shade tree and i want to try a way to figure out w
hereour electrical problem is and it all starts with this guy here carly now we already did some code reading with carly and we generated almost 200 diagnostic trouble codes scattered around all the modules in the car trying to sort through almost 200 codes again is just a tedious process that is time consuming and could easily lead you to a dead end but think about one thing when we removed the power cut relay from the fuse box in the back a lot of our features came back online stuff works a lot better than before and think about it when that relay is plugged in and it's cutting power to a bunch of different electrical
systems inside the car well those
systems are going to fail so we keep the relay out and we clear all our codes and vue He's going to scan them, in theory, a lot of those glitches should go away and paint us a clear picture, think of this situation as this Mario's method of attack would be with the sniper rifle, mine would be more like a sawed-off shotgun, you could give on your target either way one could be a little more precise so we take out the relay we're going to come back here and we're going to grab Carly who's right here and just plug it into our diagnostic port let's go good now let's put key in ignition accessory ignition so this is key on engine off come on carly and it's currently set up for our bmw x6 we're going to have to do a health report we want to start with a clean slate here so we need to clear those almost 200 codes we found earlier now check this out the report came back with only 23 codes this time much more manageable than before we can review each of these systems, module by module, figure out which ones are on the bus and attack them individually in a similar way that Mario would do with an oscilloscope, but instead of looking at an oscilloscope, we're just going to be looking at the board to see if our symptoms go away
oncewe undo any problematic modules we find, so we'll keep plugging this back in.
I suspect the answer to our problem is somewhere in our newly generated carly log here, but I wanted to mention two notable things I saw while going through them. number one remember the junction box electronics all those codes before i went and actually took it out and swapped it with a known working one to see if that changed our symptoms it didn't and now the box electronics According to Carly it has zero faults on it and this is the original one that came with the car. I swapped it with the factory one during our testing so we can diagnose things as accurately as possible here number two is a lot of these electrical modules are faulty. on them there is still a k-can error or k-can line fault code which is good is what we already know we are traversing the can bus network but we are doing it with a lot of code list more limited so it should speed up the process and k to give us an idea where to go and other quick thing carly is a diagnostic tool that was actually designed around bmw so it's very effective for troubleshooting bmw, It's also very good on Volkswagens and Audis and right now they're really giving away their adapters for free when you buy a membership.
I'll expand on that later, but it's just a crazy deal, especially if you have a BMW or other European make. I recommend you check out Carly and I'm going to leave a link to now in the description as well as being a really solid diagnostic tool carly's coding ability allows you to customize hidden features on your car you can trigger things like video emotion and turn off those annoying nav screen warnings with the touch of a button i coded my brother's bmw has the rolls-royce chime every time you open and close the doors and since i do my own oil changes in my audis i use the Service reset feature to get rid of the service light used to be you and i have to go to the dealer or use a very expensive vw tool to get rid of this light but not anymore if you are in the market for a used european car.
Carly used car check can detect odometer setbacks by comparing stored data. in multiple modules against each other to make sure you don't get ripped off nowadays my local bmw dealer wants over 200 bucks for a diagnostic which is insane when you consider all they are doing is connecting their computer to your car and give you a printout of all the codes you could do at home and much more with carly the first time you use it it pays for itself especially since a carly adapter is free right now when you buy one of their memberships all you All you have to do is click My Link in the description and use the drop down menu to select your make and model and it will tell you exactly how Carly can work for your car.
Don't forget to use code samcrack21 at checkout. r It really is an amazing tool, I use it all the time and I can't recommend it highly enough. Now I want to say a huge thank you to Carly for making my experience as an owner of these old European cars that much more enjoyable and also for sponsoring this video. rhyme or actual reason as to how i'm going to do this i'm just going to take a common sense approach and apply what i know about this car and what i've experienced with past bmw's so if you'll just check all the faulty modules here and from what I understand if you think about something like the footwell module is good here see you have that k-can bus line fault error there I would imagine the telematics yes other can bus air so these are all systems on the can bus so basically everything that has one of these can bus warnings that we're going to want to look at so here we have a fault on the can k line in the air module airbag crash safety which is probably also the srs module now i noticed another t point here to the cast which is a system i have worked on on a mini cooper before.
We have a k-can warning there. Now the cast and the footwell module in this car should be located in the same area, such as behind the bottom panel. there since there are two modules in one area and it's as simple as being here and we know how easy it is to get in there and work on it let's address that it will be a very similar process to what we already did on the passenger side okay I think that we're on to something here though that's not exactly why we came here i was on the floor here i pulled down the kick panel and when i stuck my elbow in the corner here i really felt a little bit damp it's crazy because this rug It clearly wasn't that wet at first but there's water under the rug it's clearly a water intrusion here so naturally I look around the seat under the seat and look at this we've got a wet module under here and look at the connectors I don't know how we're going to get it out this without seeing we can't move the fucking seat back because it won't work everything is disgusting and dirty here we look at the connectors they all look good come on open it up it looks pretty good man jeez we I'm really sorry Being guided in the crazy direction here I ran the
partnumber here this is a seat module so I'm assuming it just controls all the functions of our power seat but either way I don't expect much of a relay to be reinstalled in case this does something but look at this system can't detect seat position ok module is out re-calibrate ok nothing flashes anymore although cars run fine tach works which almost never it worked before most of the time the tach was stuck at zero a long time the cluster gauge was out no way look what this says all systems ok i mean it has the airbag light on so all systems can't be ok but look at this all systems was this is come on peon get in the car get in the car we need to go for a drive and really see if this works i think this should have been the module the defective, let's see here, is the AC working well?
I mean, is the radio okay? There is a rear view camera. I never saw any of this before it was full of garbage. all sorts of similar error codes the a/c is even cold mind you yeah man nothing blinked once and i remember initially all the lights were on in the dash and now i mean again besides the srs light and the light tpms which is on pretty much every one of my cars we're going to take it real slow from the start because remember before it was like throwing yourself in the park randomly doing all kinds of crazy things but it's running a lot better so it's packed of potholes pavement i could feel this car has electronic dampers and they're on a really stiff setup i mean just taking this single module out it probably removed the c functions wait yeah obviously the seat doesn't move currently but it brought everything in this car back to life is so crazy it really can be like any module in the car and when we first had this problem and i saw those kcan codes and did some digging i watched a couple of videosdifferent from other mechanics where they had faults specifically with the modules, none of them had a problem with the wiring harness, most of them had random module faults, so one of them was in a tire pit and it was a tpms receiver so if you think about that that's like exposed to the outside i almost saw another one where it was a tow module again it was located all the way to the rear and the sunroof drain had failed and water got in the rear it was in a series seven and it's ok since it's up front here what I'm assuming is our sunroof drain is blocked we'll check that out right now but enough water got in to probably short out the module and it was trying to communicate over the network out of cans but it was creating all kinds of noise and boom it knocked down the whole mains work and mostly removed the electronics so this is awesome again I've been driving for three four four minutes here not a single problem and my check engine light hasn't even come up for a bmw which is pretty good luck so far check this out i was in love with k-can line failures i was really obsessed with finding all those faults correctly but look at this is the jewel of the airbag crash safety model or the srs system look at the second driver seat module fault code in the alarm path right there it says that it happened at 123k miles whereas the last fault online kk is probably when we scanned it so this fault has been here the longest so carly caught this problem and has been staring me right in the face the whole weather.
I just never paid enough attention to it. Now we warm it up a bit. We have to see how it really works here. I'll wait until we're clear and put my foot down okay three two one go oh there we go okay that light that just came on is the classic bmw emergency mode light it goes off when you turn off the car but it will come on again similarly Circumstance where we are actually pushing the foot of the car to the ground. Emergency mode light appears. I retire. Carly did a scan and there were four codes on the engine module.
They were all BMW specific codes so nothing common like a misfire. or something like that and one of them was for an accelerator pedal module ok so put this in the same area we had the problem with that seat module. We've got a problem with the accelerator pedal module so obviously there's water in there and that's wreaking havoc on everything and we have to tidy up that area of the car, but we also have to get to where the source of the water is tidied up again. I'm going to go with the sunroof drain usually on a bmw when you have water pulling up in the footwells it's one of two things either a clogged sunroof drain or it's a door membrane coming loose with time either way they're pretty easy to check so let's jump on top of the car and see what we got let's turn on the accessory look at the key not even in the slot ya that's something that was working before and we're going to go ahead and open our sunroof here let's jump up to see if we see anything and right away look at this look at passenger side here passenger side is dry if you come over here and look can you see there's a puddle of water blocking the sunroof drain?
So when that happens, this just stops here and will find its way into the footwell, as we just experienced. Sunroof Drain Needed to be Cleaned Sunroof drain problems are nothing new and have caused problems on many different cars for as long as I can remember. We first vacuum any remaining water from the carpet, and then to clear the drains, we blow them out with compressed air. after doing this the water still wouldn't come out. I then tried pushing a weeder string down the drain which only went down about four or five inches before clogging and the water was still clearly kicking up under the sunroof without this issue.
Problem fixed first the x6m will never be right so next step is figuring out how the drain goes through the car and how things go we'll probably end up putting this bmw in a giant bag of rice look how much water bye
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