Jump to content


Photo

DIY - ABS Sensor Change


  • Please log in to reply
70 replies to this topic

#1 F6HAD

F6HAD

    Affiliate / Co-Founder

  • Administrators
  • 12,918 posts
  • Name:Fahad
  • Car :2015 Audi A6
  • LocationHalifax

Posted 12 August 2010 - 01:54 PM

[Edit : details in Post 11 or http://typeaccord.co...dpost__p__4678]

Guys,

As some of you know my ABS and VSA lights are intermittently coming on and going off.. CJ very kindly diagnosed it as a faulty rear left ABS sensor.

Shopping around it seems Honda want circa £140 for this part (and that's with our club discount).. you can't really buy from breakers in the UK as they want to sell you a complete hub assembly due to the fact these sensors tend to break when you try to remove them.

So I managed to secure a purchase of the only Rear Left ABS sensor on the USA Ebay site taken from an Acura TSX (essentially the same car). It's a genuine part but is used.

It's turned up today so over the coming days I'll do a litte write up on what's involved in changing one of these.

In principle it should be a straightforward remove and replace. However in practise I believe it will be quite challenging and I suspect the old sensor is going to need to be drilled and/or pulled out carefully from the hub.

Here's a pic of the sensor:

Posted Image

Looking at it closely I think the only thing that distinguishes the left from the right is the little bracket.. and I think that bracket can be carefully removed with a flat head screwdriver, so if you need one - maybe consider getting either side and just using the bracket from your old sensor.

I did notice that there were a few Rear Right sensors, but only one Rear Left for sale.. And the right side ones were cheaper. This item cost me about £53 delivered.. I noticed someone selling a rear right for around £40 delivered..

Anyways I'll keep you posted when I get round to this.

Cheers

Fahad.
  • dionysius and honda_saj like this
Posted Image
Mobile Engine Chiptuning & Remapping Specialists

Cars tuned from £199 at base + Enquire about our DPF & EGR OFF services

info@premiertuning.com or Facebook

#2 Alnug

Alnug

    Creator / Admin

  • Administrators
  • 1,017 posts
  • Name:Alan
  • Car :2.4 Type-S
  • LocationWakefield

Posted 12 August 2010 - 02:28 PM

few tips Fahad if you find it doesn't come easily then don't force it or you'll have to take the whole knuckle off (well you might need to do that anyway if you're replacing and it snaps) but anyway a screw driver would be too big. you need something like a cutlery knife that you can wedge in under the bolt hole area once you have taken the bolt out. in theory here it should just pull out ;)

Just don't give it too much force the plastic just snaps. if it comes out easy i.e you can rotate it easily..then you just have to slowly ease it out. SLOWLY while using the knife as leveraage..if you know what i mean. a 14mm (or whatever spanner is good to use to rotate it around a bit to loosen).

if you find the sensor doesn't want to rotate freely then you have to work slowly...i guess you don't mind breaking it since you're changing...but if it snaps inside the knuckle it'll have to be drilled out. penetrating fluid (lots of) and time and slowly rotating and levering.

I snapped two out of three of these while i was working on them and that was with them off the car.... best of luck
  • honda_saj likes this
New site MUGEN ACCORD
If you like how TypeAccord looks and appreciate my help and effort Posted Image !

#3 F6HAD

F6HAD

    Affiliate / Co-Founder

  • Administrators
  • 12,918 posts
  • Name:Fahad
  • Car :2015 Audi A6
  • LocationHalifax

Posted 12 August 2010 - 02:46 PM

Al, thanks for the tips buddy. I guess what I didn't mention in that post is that I've already had a quick go last week and sort of damaged it ;) That's why I know it won't be straightforward ;)
Posted Image
Mobile Engine Chiptuning & Remapping Specialists

Cars tuned from £199 at base + Enquire about our DPF & EGR OFF services

info@premiertuning.com or Facebook

#4 ukaccord

ukaccord

    TAF Member

  • TA Friends
  • PipPipPip
  • 3,400 posts
  • Name:sufian rahaman
  • Car :accord icdti
  • Locationeast london

Posted 12 August 2010 - 03:03 PM

lol.......good luck bro... ;)
HASHIRIYA-A WAY OF LIFE

#5 J4JAV

J4JAV

    Mr OCD Detailing

  • TA Friends
  • PipPipPip
  • 1,512 posts
  • Name:J4JAV
  • Car :Accord CL7 & ATR
  • LocationWest Yorkshire

Posted 12 August 2010 - 03:20 PM

Fahad, I had to drill mine out... get a drill bit and measure against this new sensor and make some sort of indication on this drill bit so you don't end up drilling too much into the hub... but lets hope it's straight forward as Alan has said... on on another note to make sure that sensor works... Unplug your old one and plug this in even if it's not fitted it should turn the ABS light out.... mine went off straight away as soon as I put the new sensor in... as it completed the circuit :blink:

finallogo_zps5147afd6.jpg

www.HorizonLEDs.co.uk | Automotive Lighting Specialists

 

Please like us on Facebook!


#6 F6HAD

F6HAD

    Affiliate / Co-Founder

  • Administrators
  • 12,918 posts
  • Name:Fahad
  • Car :2015 Audi A6
  • LocationHalifax

Posted 12 August 2010 - 03:41 PM

Good tips, thanks Jav :blink:
Posted Image
Mobile Engine Chiptuning & Remapping Specialists

Cars tuned from £199 at base + Enquire about our DPF & EGR OFF services

info@premiertuning.com or Facebook

#7 Alnug

Alnug

    Creator / Admin

  • Administrators
  • 1,017 posts
  • Name:Alan
  • Car :2.4 Type-S
  • LocationWakefield

Posted 12 August 2010 - 04:18 PM

lol jav..yes i remember your whole saga last time
New site MUGEN ACCORD
If you like how TypeAccord looks and appreciate my help and effort Posted Image !

#8 Hot Fuzz

Hot Fuzz

    TAF Member

  • TA Friends
  • PipPipPip
  • 929 posts
  • Name:Paul
  • Car :Audi A6 at the mo!!
  • LocationNorth Somerset

Posted 12 August 2010 - 04:48 PM

This looks like a very int little job F I hope it goes well. Are both your ABS and VSA warning lights coming on my VSA light comes on intermittently. Would I be right in thinking this sensor acts as both the ABS and VSA sensor or not. Up to now I've had no problem with the ABS light, yet!

A dab of the brakes puts it out then I could go a few thousand miles before it comes back again. I'm hoping to find out at the HH meet in Oct what the problem is when it's put through their diagnostic machine.

Slightly off topic I'm convinced my rear OS brake is still binding slightly despite changing the flexable hose and the caliper, it's not getting hotter and there's no smell but I'm def getting a greater build up of brake dust on the wheel than I am with the NS. Could this be linked to the VSA light coming on ? could the brake be coming on without me touching the pedal if there is a problem with the VSA / ABS

#9 F6HAD

F6HAD

    Affiliate / Co-Founder

  • Administrators
  • 12,918 posts
  • Name:Fahad
  • Car :2015 Audi A6
  • LocationHalifax

Posted 12 August 2010 - 07:35 PM

Paul - without diagnosing and reading the codes it's impossible to say but yes if your light is coming on and going off then it's most likely one of the sensors.. also the extra build up of dust might be causing the problem even and interfering with the sensor.

Yep, both ABS and VSA are linked..
Posted Image
Mobile Engine Chiptuning & Remapping Specialists

Cars tuned from £199 at base + Enquire about our DPF & EGR OFF services

info@premiertuning.com or Facebook

#10 Discodave

Discodave

    Advanced Member

  • Members
  • PipPipPip
  • 412 posts
  • Name:David
  • Car :Honda Type S
  • LocationCambridge

Posted 12 August 2010 - 08:53 PM

Good luck m8, just go at it with a drill. I spent over an hour trying to get it out, 5 minutes with the drill it was out :angry:

Looking forward to your write up.

#11 F6HAD

F6HAD

    Affiliate / Co-Founder

  • Administrators
  • 12,918 posts
  • Name:Fahad
  • Car :2015 Audi A6
  • LocationHalifax

Posted 19 August 2010 - 06:29 PM

Right then guys, sorry for the delay with this, I've been very busy but finally got round to this today.

As stated earlier, in principle it's just a remove and replace.. but I didn't expect it to be that straightforward.. and it wasn't.

Total time it took me, 50 minutes. Both Jav and Dave were right, the only way to get this out was to drill it out. Not as daunting as it sounds, just take your time and be careful. Use a wood/metal 10mm drill bit, although I used a smaller drill bit first to get a nice centre hole drilled out first..

Remember to disconnect the orange plug first. You don't want to be sending any sort of pulse to the VSA/ABS system even if the ignition is off - especially if you're going to be chopping the old sensor up.

Here are the pics:

This is how the cable is routed. The sensor itself is held in with a 10mm bolt, the cable is then clipped in to a mount, and further up the route it's clamped in with another 10mm bolt. Finally, you can see it plugged into the orange connector.

Posted Image
Posted Image


So here was the problem with simply trying to remove the sensor. Despite trying to ease it out, using a stanley knife, small screwdrivers etc. Nothing would work. The sensor detatched itself from the base..

Posted Image
Posted Image

I chopped off the exposed wires and out came my trusty DeWalt :D

Posted Image

Best thing to do here is wrap some tape around the drill bit to mark the length of the sensor so you don't drill too far and damage the inside of the hub:

Posted Image

You'll know when the sensor has been drilled out.. I shone a torch inside the hole and could see some small bits of sensor left over, so out came the vaccum cleaner..

Posted Image

Once I was happy that I'd got everything out (or as much as I can) I released the handbrake, and span the hub by hand. When I shone the torch inside I could see how the sensor actually works. The inside of the hub has a ridge that is shapped to meet the flat bit of the sensor - that's how it detects the wheel movement. Anyway I could see it was all nice and clean. And it was time to fit the new sensor..

The new (used) sensor has a rubber O Ring. I coated the ring with some Moly Grease to ensure a nice seal and in it went. Fitting is a doddle.

I needed to transfer the grey plastic clip from the old sensor to the replacement as mine didn't come with one. Easy to do..

Posted Image
Posted Image

I refitted the final clamp and plugged it in B)

Posted Image

The VSA/ABS light has remained off.. and I'm confident the problem is fixed.

Prior to the fitting the sensor, the light wouldn't go out immediately - but now it does.

I also took the opportunity to give the old girl an oil and filter change, and cleaned out the air and pollen filter. Also drained and primed/bled the fuel filter.. car feels lovely now.. she has that spring in her step again B)
Posted Image
Mobile Engine Chiptuning & Remapping Specialists

Cars tuned from £199 at base + Enquire about our DPF & EGR OFF services

info@premiertuning.com or Facebook

#12 TypeR

TypeR

    Iron Man

  • Administrators
  • 5,881 posts
  • Name:Honda Guy
  • Car :Accord 05 Exec cdti
  • LocationWest Yorkshire

Posted 19 August 2010 - 09:37 PM

Good write up Faddy, top job. So when you drilled the sensor out did you manage to get all the bits out?

Also how often do you recommend the fuel filter bleed and reprime?
Honda Accord 2.2 I-CTDI Executive with Premier Tuning Stage 1 EGR OFF 18" Storms, LED number plate lights, LED sidelights, HID 4300K and X carlink with bluetooth handsfree. Diesel Power

#13 Alnug

Alnug

    Creator / Admin

  • Administrators
  • 1,017 posts
  • Name:Alan
  • Car :2.4 Type-S
  • LocationWakefield

Posted 19 August 2010 - 11:03 PM

glad you got it sorted!..it's just never how the book states it should be lol
New site MUGEN ACCORD
If you like how TypeAccord looks and appreciate my help and effort Posted Image !

#14 F6HAD

F6HAD

    Affiliate / Co-Founder

  • Administrators
  • 12,918 posts
  • Name:Fahad
  • Car :2015 Audi A6
  • LocationHalifax

Posted 20 August 2010 - 12:03 AM

Shab, yep I'm happy I got it all out.. but we'll see.

I kept the bits left over from the old sensor, as you might be able to use the Left bracket if you buy a Rear Right sensor from the USA for your mates car.

Regarding the fuel filter bleed, it's the first time i've done an interim service on the fuel filter. All my tools were out and I was going to change the oil anyway as it's been 7k miles since the major service in March.. It's a bit fiddly but worth doing.

Al - yep, it's never how they say it will be.
Posted Image
Mobile Engine Chiptuning & Remapping Specialists

Cars tuned from £199 at base + Enquire about our DPF & EGR OFF services

info@premiertuning.com or Facebook

#15 Hot Fuzz

Hot Fuzz

    TAF Member

  • TA Friends
  • PipPipPip
  • 929 posts
  • Name:Paul
  • Car :Audi A6 at the mo!!
  • LocationNorth Somerset

Posted 06 September 2010 - 01:15 PM

Nice write up F cheers looks pretty straight forward maybe this is the problem with my VSA light coming on now and again I'm getting it looked at the HH meet.

#16 brett

brett

    T A Terminator

  • Administrators
  • 13,669 posts
  • Name:Brett
  • Car :8th gen 2.4 Manual
  • LocationBristol

Posted 06 September 2010 - 03:04 PM

Just seen this as well Fahad a very good DIY write up that will save us members pounds from dealers.
 photo IMG_06551_zps16877260.jpg photo 1a30ead12b5799ee4c7f519123a797de_zps2vsu5cen.jpg

#17 Puppy

Puppy

    Advanced Member

  • Members
  • PipPipPip
  • 471 posts
  • Name:John
  • Car :Audi A4 Avant TDi
  • LocationLasswade, Scotland

Posted 13 September 2010 - 04:41 PM

My ABS light came on 3 times today (No VSA on my car Phew!)

It would go out when the car was re-started, but came on again after 15 mins or so. However on the way home it never came on at all, so I'm guessing it's an i intermittent fault.

CJ, or anyone, how do you check to see which one is duff?.

MANY THANKS IN ADVANCE
Quattro Stage 2 Remap by Premier Tuning

#18 F6HAD

F6HAD

    Affiliate / Co-Founder

  • Administrators
  • 12,918 posts
  • Name:Fahad
  • Car :2015 Audi A6
  • LocationHalifax

Posted 13 September 2010 - 04:50 PM

John it needs to be plugged in for a diagnostics check.. If you're coming down to the club meet, maybe CJ can do it then..
Posted Image
Mobile Engine Chiptuning & Remapping Specialists

Cars tuned from £199 at base + Enquire about our DPF & EGR OFF services

info@premiertuning.com or Facebook

#19 Puppy

Puppy

    Advanced Member

  • Members
  • PipPipPip
  • 471 posts
  • Name:John
  • Car :Audi A4 Avant TDi
  • LocationLasswade, Scotland

Posted 13 September 2010 - 05:22 PM

MOT due in November, so may be cutting it a bit fine. Is it a question of using a multimeter?
Quattro Stage 2 Remap by Premier Tuning

#20 F6HAD

F6HAD

    Affiliate / Co-Founder

  • Administrators
  • 12,918 posts
  • Name:Fahad
  • Car :2015 Audi A6
  • LocationHalifax

Posted 13 September 2010 - 05:45 PM

I guess you could use a multimeter and check each sensor for resistance but the problem is if the fault is intermittent then you might not pick it up.

If you get a proper diagnostics, the fault will have been logged in the ECU's retained memory and you can see which sensor it was - if it's even the sensor! No guesswork involved.

Also if your ABS light isn't on in the MoT, it's not a fail..
Posted Image
Mobile Engine Chiptuning & Remapping Specialists

Cars tuned from £199 at base + Enquire about our DPF & EGR OFF services

info@premiertuning.com or Facebook