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Discussion Starter #1
Hi all,

So I am receiving occasional warning lights that pop on all in one instance. Note: they seem to always come on during 20-40 minutes of highway/freeway driving.

In the digital readout:
1. Air Susp. Inactive
2. HDC Inactive

Icons on the dash:
1. ABS icon
2. Brake icon
3. Exclamation (!) point icon

Unfortunately I am unable to witness this occurrence because it seems to only happen when my parents drive my vehicle. I scoured the forums and it looks like it could be a number of things (steering angle sensor, low voltage from the battery, ABS issues). However the one thing that is throwing me off here is the Exclamation Point ( ! ) warning light icon. I found a possible answer here regarding the exclamation point: viewtopic.php?f=2&t=27863&p=214108&hilit=exclamation#p214108 -- however this light never came on during a turning of the wheel so hopefully it isn't directly related to an expensive air suspension bag.

Note: all lights go off and don't come back on (until the next unplanned occurrence) after the truck has been shut off and restarted.

Obviously I am HOPING it is as simple as resetting the steering angle sensor as I installed a fresh battery 4 months ago and was unaware of the reset procedure and thus the vehicle still has not technically had its steering angle reset since then.

Any other ideas I might have missed? In the meantime, I'm going to have someone reset the steering angle sensor today. Obviously trying to avoid going to the dealer although it may be inevitable if these warning lights don't stop "ding"ing at me.

Thanks in advance!
 

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Could be a bad alternator also that is killing the battery. I had an alternator that was putting out 11.9 to 12.1 volts - it gave me all sorts of fits! Replaced it with one putting out 14.4 volts - all is good. :)

I've also had the ABS sensor on the front right wheel go bad (wheel rubbed through the wire) and that caused a HDC/ABS/AirSuspInactive error.

Good luck!
 

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Discussion Starter #3
Also, I don't have the manual on me but what does the exclamation point ( ! ) warning on the dash mean?
 

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spizzi said:
Also, I don't have the manual on me but what does the exclamation point ( ! ) warning on the dash mean?

Traction Control.

It usually flashes when the TC system detects wheel spin. If it is lit solid, then it means the TC is non-functional.
 

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Discussion Starter #5
Ok, so this is what is throwing me off in the slew of warning lights that are popping up. Not sure why TC would simultaneously jump on with the other lights (ABS, Air Susp. Inactive, HDC Inactive, Brake) while on the freeway?
 

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Because when any of the 4 main systems fail, ABS, TC, HDC or Air Susp, it cascades a failure to the other three. TC is reliant upon the ABS wheel speed sosnors to know which wheel is slipping. HDC is reliant upon TC to know how to apply the brakes going downhill, and therefore it is also reliant upon ABS for wheel speed. TC is also relaint upon height sensors to know what is happening in the pitch of the car.

They are all interlinked. When one fails, they all "fail". When they all work, they create one of the most capable off road vehicles produced.
 

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Discussion Starter #7
Update: It's the Transfer Case Motor (stuck) and a Faulty Steering Angle Sensor. The Steering Angle Sensor wasn't so bad. The Transfer Case Motor is $2200 not including 6 hours of labor. This one is going to sting a little.
 

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Discussion Starter #9
Ouch, yes, the mark-up is absurd. But then again, it isn't in stock anywhere that I could find other than the dealer so that doesn't help me either. I'm gonna bite the bullet on this one and just get it taken care of by LR Service.

I'm concerned about how the transfer case motor is faulty to the point where it would shift, on its own will, into Low Range. Huge safety issue, don't you think? http://www.aboutautomobile.com/Complain ... nsfer+Case
 
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