The daughters in Law Seat Altea decided to throw a ABS warning light and the reader flagged the right rear sensor. Hard defect as it would not clear. Bought a sensor and its a one allen head screw which came out nice and easy. I pulled on the old sensor and gave it a slight twist either way to loosen any corrosion on the mounting plate and out it came. Or so I thought, because it did not, as it left half of it behind. I could see where it had failed as there was green copper mold on the middle so I think it failed there and lost continuity. Now the stub axle is a nightmare for access and I could just about see the remains at the bottom of the sensor behind the dust shield. It would not budge with long nosed pliers and so I thought I would remove all the gubbins to get at it. Caliper and its carrier, brake disc, hub with bearing and then the dust shield. I mentioned this on the Seat forum and a member mentioned that the sensors are supplied in a new stub axle along with the bearing, or so he was told by a garage, as they are not replaceable on the car. Has anybody come across this on these cars. I had not started stripping it down as I found the caliper carrier was held on using bolts with heads that required a M14 spline 12 point drive bit which of course I did not have. Any other bit yes but not this one. They look like Torx bits but with more splines. So for now I have told her to use it as the "normal brakes" are fine until I find out what is what. Its a 2004 model by the way 1.6 petrol fwd.
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the snooper
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If you can buy the sensor it must be replaceable, can you get a drill in or a thin chisel and being careful just destroy what's left and pull it out
Johnseat
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How about just screwing a large wood screw into the bit of the remaining sensor and pulling out with a claw hammer, that's how I remove snapped off sensors, works a treat.
As for the spline bolts, they are a 12 point torx socket and they like to round off really easy unless you give the socket a good thump in with a hammer.
As for the sensor comes with a hub and bearing as one, that will be complete rubbish as the garage will just be covering them selves for damage to the exciter ring in the bearing when removing the sensor.
I've not come across the sensor and hub as a single piece.
As for the spline bolts, they are a 12 point torx socket and they like to round off really easy unless you give the socket a good thump in with a hammer.
As for the sensor comes with a hub and bearing as one, that will be complete rubbish as the garage will just be covering them selves for damage to the exciter ring in the bearing when removing the sensor.
I've not come across the sensor and hub as a single piece.
johnseat :- That is what I wrote in response actually but as I told him I have a memory stick for the car through the ELSAWIN programme (VW) and funnily enough it does not mention taking or refitting either the sensor or wheel bearing but it does cover the whole stub axle assy! That is what I usually do with these and any socket especially if there is corrosion, give them a good tapping.
the snooper:- as I mentioned the design of the stub axle is such that they have mounted the sensor in what best can be described as a cubby hole and getting your eyes on it and the allen key is a miracle as it is. There is no clearance to the hub to knock it through as the only gap is the running air gap and it is impossible to knock it through to the cubby hole, even seeing it took me ages!
the snooper:- as I mentioned the design of the stub axle is such that they have mounted the sensor in what best can be described as a cubby hole and getting your eyes on it and the allen key is a miracle as it is. There is no clearance to the hub to knock it through as the only gap is the running air gap and it is impossible to knock it through to the cubby hole, even seeing it took me ages!
slim_boy_fat
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Sensors separately seem to be plentiful https://www.google.co.uk/search?q=s...rceid=chrome&ie=UTF-8#q=seat+altea+ABS+sensor
I'd be astonished if there weren't a YouTube video telling how to extract a broken sensor part.
Edit: when I saw the thread title my initial reaction was that it was another @brokenbiker post.......
I'd be astonished if there weren't a YouTube video telling how to extract a broken sensor part.
Edit: when I saw the thread title my initial reaction was that it was another @brokenbiker post.......
I had already bought the sensor from my local GT car suppliers as it happens and got a M14 torx 12 point but it was too long to use on the top bolt as it would not clear the stub axle architecture and so I am awaiting stubby version.
keithski122
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I've removed mazda abs sensors with a die grinder before.
The_Yellow_Ardvark
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On the works Van I got involved I poured 3 kettles of boiling water over the metal on the carrier.
cut the wire of the sensor, new one comes with a new one.
Using a punch, drifted it forward. Then back, It broke. So just beat it out.
Seat will tell you certain parts are not available. Classic is the small spring in the door locks. They say they are not available separate. They are.
I know the fixings you say, a bug*****. Nip them up a bit before undoing.
cut the wire of the sensor, new one comes with a new one.
Using a punch, drifted it forward. Then back, It broke. So just beat it out.
Seat will tell you certain parts are not available. Classic is the small spring in the door locks. They say they are not available separate. They are.
I know the fixings you say, a bug*****. Nip them up a bit before undoing.
Access is the problem on this car. There is none. Even with the stub axle on the bench it would be a struggle. I looked on you tube and there was a vw golf mk4 on which the bloke was changing the rear sensor. Now his access was easy but could have been even easier if he had taken the wheel hub off. But what a saga he had. He ended up chiselling it in half then tapping the new one in as it was so tight!
rikrobson
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I changed on on my A6, which is probably similar. the metal tube is held in by a copper clip. this has all corroded up and the internals were now a separate pice from the body, hence the need to replace it.
Once it was cleaned ot and the clip removed the new one was loose in the hole, so it was silconed in. its been all ok for over a year now.
Once it was cleaned ot and the clip removed the new one was loose in the hole, so it was silconed in. its been all ok for over a year now.
It was made as an assembly from components sourced from suppliers and built up when the vehicle was made to there must be a way of removing it and replacing it.
Many manufacturers now do this as selling you a small component is not conducive to profitability when they can sell you a complete sub assembly for 20 X the price.
Many manufacturers now do this as selling you a small component is not conducive to profitability when they can sell you a complete sub assembly for 20 X the price.
Spoke to Seat dealers today and indeed as we thought the sensor is designed as a replaceable stand alone item. The access is awkward as the sensor is between the back plate and the stubaxle unlike, say the Golf and others, that mount on the stub axle but are poked through the back plate. It seems though that the wheel bearing and wheel hub are a one piece item that is not designed to allow the bearing to be replaced separately.
rikrobson
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There's quite alot of cars like this now.
The_Yellow_Ardvark
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@rikrobson
Pug 205 rear drums, the bearings were not available as separate items, I think the 407 rears were the same, but not sure.
Now they are, after market, of course. But in house they were a part on the Peugeot data base.
Pug 205 rear drums, the bearings were not available as separate items, I think the 407 rears were the same, but not sure.
Now they are, after market, of course. But in house they were a part on the Peugeot data base.
