|  | Home > Puma (Tdci) > ABS issue Defender 2.2 Puma | 
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| macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 1139      | 
 
 Ok, that answers b) - incompetent dealer, not unplausible   What about a) - how did/do you drain the oil? There is no drain plug and the ABS sensor is on the top of the hub (the obvious solution, turning the axle upside down was already suggested  ) You could use an oil pump maybe, but your orignal post confused me re the draining. | ||
|  20th Jun 2025 10:32am | 
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2557    | I wonder if they removed the sensor in order to fill the hub to the top, and then refitted it incorrectly. You can never tell, and Aston Martin technicians will likely not be familiar with old school landrovers. | ||
|  20th Jun 2025 11:26am | 
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 841    | Just drain your axle/diff casing..you will likely wonder why its so full / overfull..I certainly did..🫣🤣..
 I don't think the sealing is that effective .. I just re filled with grease and until I do my front axles I most probably have a rather fluid grease in the housing..😳 On the foxwell question.. that model is no longer supported, but they will have an updated model.. But any half decent scan tool with the option of European makes will likely fo the same job | ||
|  20th Jun 2025 11:41am | 
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| Toucanspeed Member Since: 28 Nov 2024 Location: South Posts: 18      | I’ll probably use a  vacuum pump to drain as much as I can from the hub and stick in some one shot. I’ll have a chance to check the rings then. I also need to check the diffs and transfer box to make sure they have the right oil one way or another. 
 I’ve ordered a Foxwell NT680 plus as that can read live values and steering angle sensors. I work on other cars as well so it would be a benefit too. If this doesn’t fix the problem I’ll invest in the NCom03. Speaking to specialist LR garages it’s a fairly known issue ranging from faulty ABs units both Bosch and Wabsco, to steering angle sensors, wiring and wheel sensors. The vehicle thinks it’s working correctly or it would flag a fault light so it’s just a case of ticking off each item. The ABS modulator is the most expensive bit but only £200 exchange if I’ve found the right bit. First job reluctor rings and sensors. Wonder if they over filled the diff because the seals had gone which filled the hubs as well, is this likely or possible with 60k miles? | ||
|  20th Jun 2025 4:27pm | 
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| Toucanspeed Member Since: 28 Nov 2024 Location: South Posts: 18      | 
 Don’t think they fitted incorrectly as appeared ok and bold was very stiff and corroded | ||
|  20th Jun 2025 4:28pm | 
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| Toucanspeed Member Since: 28 Nov 2024 Location: South Posts: 18      | 
 The ECU finally kicked up and error with the rear left (N/S) sensor. I lifted the wheel off and saw the 5/6 retaining nuts were almost off their thread. Doubt they came undone on their own but who knows. Tightened them up thinking id fixed it but it’s still doing the same thing. Checked the voltages with a fox well NT680 Pro and the rear n/s appears to occasionally lag the others in output. Ie starts off ok but when braking (and the issue happens) the signal is lower in amplitude than all the rest. I suspect as the reluctor ring was loose, its either now damaged the sensor or possibly pushed it back slightly. I will investigate and let you all know. | ||
|  28th Oct 2025 2:06pm | 
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| HardCharger Member Since: 03 Mar 2013 Location: Manila Posts: 831      | I had somewhat similar issues with you recently. In my case, my truck is 2011 2.4 Puma. I would get front left wheel speed sensor error. Got a new sensor, no bueno. Tried cleaning the ring on the CV by just running a rag on it from the speed sensor hole, no bueno.
 We had to remove the tire, drive member, and pull out the CV, ring was gunked up with what we presume is one shot grease with alarmingly viscous viscosity. Cleaned it up good, repacked the CV, greased up the drive member, topped off with thicker, but to spec, grease to replace the viscous one in the hub. All good now. I hope this helps. No Better Friend, No Worse Enemy | ||
|  29th Oct 2025 2:38am | 
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| Toucanspeed Member Since: 28 Nov 2024 Location: South Posts: 18      | Finally fixed it, removed the sensor, a few iron filings on the end, cleaned it and re-inserted it. It appeared to go in slightly further. I suspect if its too far out this causes a lag as id thing there would be a threshold voltage that needs to be reached before acting upon it. Anyway all good now Picture of the inductor ring retaining bolts very loose!
   Click image to enlarge | ||
|  29th Oct 2025 9:38am | 
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