I bought my 2002 Discovery ll SE new and now have 99,000 miles on it. Been garage parked in California all these years and is still an eye-catcher. Doesn't have a dent or scratch on it, but is now leaking oil and has an engine clicking noise (only at idle). I'm considering selling it, but the 3 ABS lights that have been on and off for more than 10 years are now on almost all of the time. I've never had it officially diagnosed, but have never had any indication that there are any braking issues. I've never had it off-road or in snow, so maybe have never tested it, but haven't had any indication of braking issues. Would someone explain to me what the potential danger is with continuing to ignore these warning lights?

 

No danger really. The only thing that could be dangerous is that ABS does not work. ABS will prevent wheel lockup when braking hard on slippery surfaces. Without it, the chances of going off the road or hydroplaning will rise. During normal driving conditions, ABS is not used. Traction control will also be disabled, so you may be more likely to get stuck off-road.

 

That was helpful. Thank you. What does Traction Control actually mean, and under what circumstances does it come into play?

 

Traction control on discoveries activates when one wheel is spinning because it does not have any grip. When this happens, the wheels with traction may not turn because the spinning wheel is robbing all the power and the car does not move. To combat this, traction control applies the brake to just the spinning wheel(s), so that the others can turn. This is only activated and needed in slippery conditions like snow and off-road.

 

Mate! Where you been man? You should have been on these forums for decades! You got so much catching up to do....

 

I've taken good care of this one for 23 years, but I've never spent any time on forums of this nature. My old friend here probably needs a mechanic owner going forward.

 

It’s more than likely a ground issue in the modulator.
Not an actual ABS issue. You should fix it.

Search “option B” or google it. It is very simple. Fixes most of them. You may have another issue, hard to say without proper diagnosis but it’s probably simple.

 

Option B resolved my intermittent Amigos issue once and for all.

 

Search for "Option B" - In my opinion, not having ABS is dangerous. When you get into a situation that is slick, like rain or snow, you'll seriously wish you had it. I didn't realize what a big deal it was until I began sliding down my snowy driveway uncontrolled.

 

The link in our Sticky is dead, apparently Option B info is getting hard to find. To simply the process you cut the Yellow/Green wire at the WABCO Modulator plug (back about 3-4 inches). Then you connect a 3M Butt Connector to the Yellow Green (Vehicle Side) and run it down to the Shuttle Valve Switches. Lift WABCO Modulator out of it's bracket, remove Shuttle Valve Switches inspect insulation and if good cut the plug off the Shuttle Valve Switches, connect wire to one side of the Shuttle Valve Switch (where you just cut off the plug). Then connect another wire to the left over Shuttle Valve Switch wire, and run it to ground. Option B is now done. I personally use a nice 2 wire plug so I can remove the shuttle valve switches if needed. Clean up your wiring at the vehicle harness (I do it to where you can't tell I even cut into it) and you are DONE!