ABS light diognostic, repair, wheel sensor cleaning – Auto Repair Series

ABS light diognostic, repair, wheel sensor cleaning – Auto Repair Series


hi my name is Robert this video is designed to give you step-by-step detailed instructions on completing the task at hand visit my youtube channel and watch my disclaimer video and please like share and subscribe I hope you find the information looking for it thank you very much for watching in this video I’m gonna try to figure out what’s going wrong with this Jaguar xj8 anti-lock braking system it’s got a ABS light on on one part of the dash and it has a warning desk flashing that says the Trax is unavailable in a ASC or something else is unavailable so there’s the ABS like deer in the tachometer and there’s the other one is there with the ASC not available and it tracks not available of course you can cycle your Clear button here to clear those buttons and get back to your normal settings but that system is a very good system to have working especially if you drive in wet or snowy climate now I’m rambling a little bit here I’m not sure how accurate this information is but it’s the way I understand the ABS system to work when you’re traveling the speeds above 25 miles an hour and some cars it’s a little faster but the ABS system is designed to help you avoid having will lock up while you’re driving down the road if you’re driving down the road and something darts out in front of you and or you have the need to hit the brakes kind of hard especially on wet slippery snowy surfaces wheels that are not locked up will allow you to continue to control a car and slow the car down faster then it would as if the wheels locked up and you went into a spin or a skid now there are several components in your braking system you got your pedal which moves your brake booster normally your brake booster channels fluids to your brake calipers and most of the cars that have ABS have disc brakes on all four locations however in an ABS equipped cars the cars are also equipped with the ABS module and a controller which senses will lock up because they have sensors each will location now how do they be a sensors send near signal to the ABS module is by magnetic pulses and here is a axial CV axle with the nubs on it and as these nerves run close to the ABS sensor they’ll create a magnetic pulse against the sensor here’s the sensor and as you can see it has three little metal strips in it there that help it pick up these passages as it goes past those little studs so when it senses that this is no longer moving it’ll send a signal to the module up there to stop any bright pressure going to that caliper at certain speeds so it doesn’t lock up so this is what a sensor looks like and and you have these rib things on axles or on the wheel hubs if the car is not driven by that will like rear-wheel drive cars will have a ribbed thing on the front hubs to give it these pulses vice versa on the front-wheel drive cars now from what I’ve read on these Jaguars the most common problem is will sensor getting dirty and gummed up and between the sensor and what the sensor takes it’s reading on so in troubleshooting this problem I’m a clean the wheel sensors first now occasionally or about another half the time you’ll have bad ABS modules in these cars that are in excess of 10 years some people take those modules apart and resolder connections in there and get them fixed that way or they replace the module or they send the module out to be rebuilt at any rate I’m gonna start troubleshooting this one by cleaning the sensors and see if that works this is what I use to clean the ABS sensors on this Jaguar and it’ll probably be to save for most cars I use an 8 millimeter ratchet if your 3/8 inch or quarter inch drive put a little lock tight on the screws a soft wire brush or you can use some other kind of plastic brush some electrical contact grease for plugging the wires back in or use petroleum jelly and I use a pair of ramps cuz you could reach all of these sensors with the car on ramps you don’t have to take any wheels off if you want to take the wheels off you can that way you could check some other things and look at the wires to where they go and I also included that in the video as well ok I’ll put the car up going ramps and I will see if I can access these sensors while the car is on ramps and instead of pulling a wheel off and sure enough that’s the sensor right there so don’t look like I have to pull the front tires off so let’s go ahead and pull that sensor and clean it off and put it back on when you’re removing and installing these ABS sensor screws be careful not to strip that hesita bolts they seem pretty soft and a little rusted like they’ll strip as I said you could clean these off with hard plastic brush Hart toothbrush I ended up using a soft metal brass brush to cleaning it off because I didn’t want to wet it with any kind of cleaning agent and that’s some vaseline I put in there to seal off there the plug outlet when I put them back together I suggest you use light weight or medium weight at the most Loctite when you put those screws back in and there’s a good view of an ABS sensor with the wheel hub sprocket that brushes right past and almost against the ABS sensor and you want to check the wires that’s coming off of it make sure you don’t have any wiring issue where the wires are rubbing something or or cracked or broken or anything like that and that’s plugged in real good ok at the rear tires is also able possible to do this with the coracle winks you come down under the car and you look on the inside of the wheel and from the back right on top of this assembly is the ABS sensor so you pull that screw right there unplug it lift it up out of that will assembly and you can do this job on wheel ramps and not have to remove the tire so it’s probably a job that can be done all in all in 30 minutes if you don’t have to pull any tires access the tools to Jack the car up and get a get that wheel off so I can look at it and check the sensor so I pull the panel off and all your tools to pull the wheel off and Jack the car up should be under here now you never ever ever want to get under a car with the manufacturers supply jack so I also put a jack stand under it to keep it stable and safe okay so I access all the tools to Jack the car up now I’m gonna put something in front of him behind the opposite tire of the car to help prevent the car from rolling I’m also going to set the parking brake nice and tight this car comes in with this will stop so I’m going to put this behind the passenger side rear tire and I’m gonna put a brick or something in front of that same tire and I’m a jack up the driver side front tire okay I have that wheel block I have that parking brake pulled up tight and set now I’m gonna find the jacking points on this car which is right there if you’re not a hundred percent sure of the jacking point on the car when you’re working on looking at owner’s manuals find it out because if you jacked the car up in the wrong place you can’t damage something under the car and possibly have the car following you you also want to make sure you’re on the flat smooth surface when jacking the car you don’t want to be on gravel or lawn or nothing like that okay I pulled the dust cap out of the jacking point I slid the all the way in the jacket point and when you know it they even recommend that you not get under the car to do anything with this jacket stall so now I’m going to take a little bit of pressure off the wheel Jack the car up a little bit but I’m not going to jack it up high enough to get the wheel off the ground just take a little weight off of it after I do that I’m gonna break my lug nuts loose because I went to will to be on the ground when I break those nuts loose here’s the tool supply to remove the wheel lug nuts has a little telescope and it says when you’re removing the nuts telescope it when you’re tightening them don’t I guess they got a theory behind that because as you can see this one is bent and it’s common for these lug nut tools to remove the lug nuts on the wheels not to be adequate when it comes to removing and tightening it so you need to check these on a car when you get them so that you’re not stuck out there and can’t get your lug nuts removed and for that reason often keep a triple lugging a tool or a tea lug nut tool in the car as a as a good spare and it also helps me help others when I find people stuck on the road can’t get their lug nuts off so I’m gonna go ahead and break the lug nuts loose I’m not taking them off then I’m gonna Jack the car up put the jack stand under it then take the lug nuts the rest of the way off take the wheel off put the jack stand in place lower the car on the jack stand then proceed due to the fact that I’m going to be working under this car I jacked it up as far as necessary to get a jack stand under there so I positioned the jack stand under the car and then I lowered the car from the jack on to the jack stand so that jack stand is supporting most of the weight in the car now I’m gonna go ahead and remove those lug nuts and get that wheel off okay I jacked it up so the wielders off the ground I don’t get it too high maybe about five cranks passed up now I’m going to go ahead and pull the lug nuts off the wheel and remove the wheel once all the lugs is off you want to bump the wheel at the top and that should break it free from the hub now it’s broke free you can go ahead and pull it off the car okay now that you got your wheel off you could take a look at your brakes and stuff like that see if you need s stuff needs to be replaced he would kind of condition your your suspension is in but you also need to find your wheel sensor and on this car it appears that the wheel sensor is rated here on the front so you may be able to get to that sensor by putting this car on jack stands and not having to pull a wheel but you can go ahead and pull the plug on the wheel wheel sensor be careful not to break it then it looks like you have a small bolt there may be an eight millimeter to pull the sensor off so let me go ahead and remove that sensor that was an eight millimeter bolt and as you can see it has some Loctite on it and this is the ABS sensor be gentle when pulling it off you don’t want to break it and as you can see it has some magnetic or metal things that stick out of it for my understanding these things run by magnetic poles now when you look in the hole that the sensor was in you see that gear thing there and that’s part of the will assembly and that of course turns around when you’re driving and it lets the car know that this will is in motion and it’s not locked up now when you’re rolling along and it’s getting those magnetic pulses it’ll let the ABS module know that that wheels turning and not locked up now when you get a bunch of dirt gummed up in these sensors or on the sensors it may interfere with the magnetic poles that it gets in may throw an error code so in an attempt to get rid of that I’m gonna brush this off and make sure that hole is clear which it looks like it is and I’m gonna put that back on and I’m gonna do that on every wheel location I recommend that you’re a little gentle with that so use a real heart toothbrush or real hard plastic brush then i’m gonna put some Loctite on that screw and put that back in okay now I got my sensor plugged back in and the bolt in and secure I just tighten it down you know just snug it down a little bit out I don’t know ten foot pounds probably enough on that screen maybe twelve and I put a little Vaseline on that connection so that no water nothing gets in there to cause that thing to corrode in there so now I’m ready to put my wheel back on now I’m ready to put the wheel back on and put the lug nuts on it now what I normally do in this case is if I got lug nuts that do not have washers like this one does I put some anti-seize along the surface of the lug nut that makes contact with the wheel not on the threads but on the part of the lug nut that contacts the wheels so that those bolts don’t get stuck on the wheels I’ve seen them where I couldn’t get the lug nuts loose I had to get help for somebody to break the lug nuts loose and you don’t want to be somewhere get a flat tire and can’t get your wheel off so go ahead roll your wheel in place if you need to put a little anti-seize on the part of the lug nuts that contact the wheel do that then you want a finger tighten these nuts on and then just snug them down with your tool crazy enough I’ve even seen times where somebody had their lug nuts off and couldn’t get your wheel off because this surface of the wheel and inside there was stuck to the hub so you may even want to spread some anti-seize compound around here and around those pieces that grab hold to the wheel so that that don’t get corroded and stuck to the hub as well okay I got all the weld nut lug nuts in place and snug down a little now what I’m gonna do I’m gonna lure the car down and put some weight on the will and Didyma tighten the lug nuts you don’t want to be wrestling around and trying to tighten the lug nuts with the wheel off the ground it’s just not gonna happen so if you got a jack stand there you want to jack it up move to Jack standing over it if not just lower it until you put a lot of pressure on that wheel it don’t have to be all the way down then you want to tighten your lug nuts to the torque specifications in the manual most are close to 80 80 foot-pounds now when you tighten your lug nuts you’re supposed to go in a cross pattern so you tighten this one then go across this one then go across this one then go across this one then go across that one in the star pattern it helps you prevent from warping your rotors so let me go ahead and lower the car put some weight on the tire so I can torque it down okay now that I got this wheel back on lug nuts tighten I’m gonna pull this Jack from under the car then I’m gonna move my wheels chocks on the opposite side and do the other front wheel then just go from will to will until you get all four of those sensors cleaned up then the system will test and check itself out go ahead and take it for a test drive and see if it clears the problem all right now that I’ve got all the sensors cleaned off as part of my troubleshooting I need to drive the car sometimes this ABS system will clear the error faults and you know once it gets up to 30 40 miles an hour sometimes it’ll need a few miles under the belt before it clears that error code so I would say drive the car 100 miles before you do anything else and if that doesn’t do it then you have to decide whether or not you want to take the car to a professional and have it scan for air codes to see what they say is wrong with it or if you want to start replacing parts or rebuilding that ABS module now to rebuild that ABS module what you need to do is locate it you remove it from the ABS controller valve and it’s got these little funny reverse torques on it you crack it open and you look inside for solder joints and Reese well disorder joints but as I said I’m going to test drive it for 50 to 100 miles to see if my ABS line it’s clear before I go cracking that module open but in most cases you either have a bad module dirty sensors or a bad sensor and then you get into wiring issues but like I said you can start cheap and easy by cleaning the sensors off then you could get it scanned or rebuild that module thanks for watching if you feel that this information was beneficial please like it and share it with your social media friends you can also subscribe to my channel so that you can get notifications of future videos that I post visit my channel I have all types of do-it-yourself videos there you can leave questions here and I’ll try to respond to them as quick as possible you can also visit my website at robert spinner.com thanks again for watching


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