How To Fix ABS Sensor On 1999 Land Rover Discovery

If you’re a stickler for safety and you own a Land Rover vehicle, being in-the-know on how to fix the Anti-lock Braking System (ABS) Sensor on a 1999 Land Rover Discovery should be a good read for you. Land Rovers have become a permanent fixture and a vehicle of choice for the royal family of the United Kingdom.  Although not a world leader in the field of Sports Utility Vehicles due to issues ranging from an unfortunate recall to that of maintenance costs, the 1999 Land Rover Discovery offers great ease in riding it, a respected build quality and an excellent abundance when it comes to passenger and cargo room.

To fix the ABS Sensor on a 1999 Land Rover Discovery vehicle, you’ll need:

  • 1999 Land Rover Discovery unit & it’s vehicle manual
  • Mechanic’s tool kit
  • Car jack tool
  • Flashlight
  • New set of O-rings
  • Car grease, lubricant and cleaning materials
  1. Seek the expert’s help. The best advice to give is to bring the unit to a licensed repair facility that has licensed mechanics and engineers who can immediately discern, diagnose and recommend the most accurate service direction your vehicle should be subjected to. This ensures that it’s being examined by professionals who know what they are doing and have been paid to fix what needs to be fixed.
  2. Familiarize. If you opt to do it yourself, the first thing to do is to familiarize yourself with the anatomy of your vehicle. Seek out references and continually refer to your manual to know more about the nooks and crannies of the vehicle, especially those pertaining to the ABS Sensor. This should aid you in making the proper diagnosis when it comes to concluding what the actual problem is and immerse you in the vehicle nomenclature.
  3. Sensor replacement. If the problem really is the ABS sensor, follow the succeeding procedures. Pop the hood of your vehicle and from the interior fender valance, disconnect the ABS sensor harness grommet then release the multi-plug. Jack up the affected portion (whether front or back) of the Land Rover and provide additional support. Detach the wheel and tire assembly. 
  4. Removal of the ABS Sensor. Carefully pull the ABS sensor harness through the opening into the wheel arch. Remove the harness from the brackets holding it at the inner wing valance, suspension turret and the hub. Detach the brake disc. Ensure that the ABS sensor and the surrounding area remain clean to prevent contamination when you’re working on the hub assembly. Remove the Allen screw; detach the ABS sensor from the hub and dispose of the original O-ring that is in the sensor bore.
  5. The hub assembly. Unfasten the bolts used to secure the hub to the swivel hub of the Land Rover and remove the hub carefully so as to remove the ABS sensor harness. Clean with guarded efficiency the ABS sensor and its mating surface and ensure that all foreign particles are removed. Grease up the ABS sensor and lubricate the new replacement O-ring. Carefully place the now clean ABS sensor back into its position between the hub and the swivel hub. 
  6. Putting it back together. Screw back the Allen screw to a specific eighteen nanometers (Nm). Re-position the hub and fasten the bolts back to 100 Nm. Re-attach the brackets securing the ABS sensor harness and anchor the grommet back on to the interior fender valance. Plug the ABS sensor multi-plug back in its place. Place the brake disc back in its position.  Lower the vehicle.
  7. Getting technical is difficult. If the reason that you’re daring enough to go at it by yourself is to save up on money, there’s also a possibility that you’ll end up botching the job if you’re not technically inclined. Better to get an accurate assessment from experts and saving up to do the proper procedures than to do it yourself and end up having more things needing to get fixed than before you started doing the fixing of the ABS Sensor on a 1999 Land Rover Discovery yourself.
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