EXCALIBOR
Member Since: 23 Nov 2019
Location: NG228QQ
Posts: 19
  
|
Hi All. Just been for the MOT, and my Discovery 3 failed on rear brakes not working.... handbrake is working they said but no rear brakes, any idea or suggestions please...
|
 23rd May 2020 12:04 pm |
|
|
L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
|
Possibly seized callipers but seems odd that normally it would show initially by sticking on or DSC faulty
|
| 23rd May 2020 12:22 pm |
|
|
EXCALIBOR
Member Since: 23 Nov 2019
Location: NG228QQ
Posts: 19
|
I thought sticking calipers, but seems strange being both sides, they mentioned a sensor or something, does it have anything like that for the rear brakes?
|
| 23rd May 2020 12:32 pm |
|
|
waterbuoy
Member Since: 26 Oct 2013
Location: Argyll
Posts: 2862
|
Waaaay off thread but can you explain the meaning behind Excalibor? Currently 2009 Disco 3 SE, 2013 MY D4 HSE and 2016 D4 SE
Previously:
TD5 Defender 110 CSW (230k miles)
300TDi Disco 1 (289k)
4 RR Classics (300-350k each, 2 manual, 2 auto)
110 V8 CSW (220k)
S3 109 hi cap pickup (ex RN)
S2A 88 Safari SW with lpg conversion (bloody lethal)
|
| 23rd May 2020 12:58 pm |
|
|
EXCALIBOR
Member Since: 23 Nov 2019
Location: NG228QQ
Posts: 19
|
King Arthur's sword...but with a typo error...
|
| 23rd May 2020 1:14 pm |
|
|
rowlejohn
Member Since: 15 Sep 2017
Location: Montmorillon, Vienne (86)
Posts: 214
|
Apart from the separate EPB brake system with it's sensors, the only other sensors relating to the actual disc brakes are the ABS sensors (One on each wheel) and the brake pad wear sensors (one on the front and one on the rear). There are no sensors fitted to indicate a sticking/seized caliper.
The other sensors for the ABS braking system are in the hydraulic unit under the bonnet.
I suspect the problem lies with the rear caliper(s). Relocated to Mid France from N. Wales March 2021
Rovacomlite and IDD/ SSD diagnostics user
Previous Landies
3.9 SE Classic
3.5 V8 Disco
4.6 P38 HSE
L322 Vogue HSE
TD4 ES Freelander 1
|
| 23rd May 2020 1:20 pm |
|
|
EXCALIBOR
Member Since: 23 Nov 2019
Location: NG228QQ
Posts: 19
|
Thanks, I will check both rear calipers on Monday, hope I can sort it, this is my first Discovery I have ever owned.
|
| 23rd May 2020 1:49 pm |
|
|
highlands
Member Since: 11 Jan 2010
Location: NW Highlands
Posts: 5095
 
|
If the calipers aren't in great condition replacements from AF are £41.51 each with the INITTOGETHER discount code.
https://www.advancedfactors.co.uk/rear-bra...2794-c.asp Black 05 TDV6 HSE Auto
Grey 05 TDV6 HSE Auto (Gone)
54 TDV6 SE Man (killed by me  )
|
| 23rd May 2020 5:06 pm |
|
|
EXCALIBOR
Member Since: 23 Nov 2019
Location: NG228QQ
Posts: 19
|
Thanks for the link... 
|
| 23rd May 2020 6:16 pm |
|
|
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
 
|
I wonder if it’s the master cylinder ?
Unusual failure.
You could try bleeding the rears, maybe. Check fluid coming thru ?
|
| 23rd May 2020 6:35 pm |
|
|
highlands
Member Since: 11 Jan 2010
Location: NW Highlands
Posts: 5095
|
Circuits from the master cylinder are split diagonally, so can't see it being a problem with 'just' both rear brakes if so. Black 05 TDV6 HSE Auto
Grey 05 TDV6 HSE Auto (Gone)
54 TDV6 SE Man (killed by me )
|
| 23rd May 2020 7:27 pm |
|
|
Nasher
Member Since: 07 Mar 2009
Location: Clanfield, North of Pompey - UK
Posts: 2685
 
|
it's more likely both are not working very efficiently, not working at all suggests a complete lack of movement, which even when very corroded is unlikely.
Either that or both rear brake pipes have corroded so badly they are leaking, but that would be a different failure and you'd have no fluid left.
I can vouch for the quality of the replacements from Advance Factors, far better than trying to rebuild the originals.
Nasher Heaven doesn't want me, and hell is afraid I'll take over.
|
| 23rd May 2020 7:49 pm |
|
|
NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10492
|
Hey Simon 
I was about to welcome EXCALIBOR & ask him to complete his profile.. but  I see that your profile is incomplete, presumably since the D4 arrived 
Welcome EXCALIBOR, in the circumstances I'll say no more, in your case. 
Nigel
P.S. - 55 years ago I used to live up Inkersall Lane, off the A614 not far from you. Am I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
|
| 23rd May 2020 7:56 pm |
|
|
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
|
highlands wrote:Circuits from the master cylinder are split diagonally, so can't see it being a problem with 'just' both rear brakes if so.
They were before ABS systems were fitted.
Now tend to be front rear
|
| 23rd May 2020 8:28 pm |
|
|
Gareth
Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26701
|
I’d be checking for a burst pipe to the rear brakes. Dual circuit system should not result in total brake failure in the event of complete fluid loss in one of the circuits. However it should have been obvious to the tester that this has happened?
|
| 23rd May 2020 10:05 pm |
|
|
