CDL was not locking, grinding on freeway
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Three Wheeling
Joined: Oct 2018
Posts: 55
Likes: 5
From: Arizona
CDL was not locking, grinding on freeway
Was driving on freeway yesterday and CDL amber light came on. Pulled back on lever, and it turned off. Went where I was going and headed back home. Driving on freeway again, light came on again with loud grinding and whining siren type noise coming from below center console. Low gear on CDL is locked and truck hops. High functions with loud noise. Truck did not lock up, transmission shifts normally, but trying to isolate whether it is the transfer box of front differential? Any clues my wise and all knowing friends?
Thread Starter
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Three Wheeling
Joined: Oct 2018
Posts: 55
Likes: 5
From: Arizona
Was driving on freeway yesterday and CDL amber light came on. Pulled back on lever, and it turned off. Went where I was going and headed back home. Driving on freeway again, light came on again with loud grinding and whining siren type noise coming from below center console. Low gear on CDL is locked and truck hops. High functions with loud noise. Truck did not lock up, transmission shifts normally, but trying to isolate whether it is the transfer box of front differential? Any clues my wise and all knowing friends?
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Three Wheeling
Joined: Oct 2018
Posts: 55
Likes: 5
From: Arizona
I understand how mine functions. Place tranny in neutral, move lever forward thru neutral to low, and reverse the procedure for high.
The problem occurred while driving, and front lever was slipping towards low. I could feel a clicking thru shift lever. Probably a bad solenoid, but now I’m trying to figure out what is trashed...the transfer box or the front differential (or both)?
Last edited by Frtpilot; Feb 6, 2019 at 12:57 PM.
Rock Crawling
Joined: Nov 2012
Posts: 411
Likes: 102
From: Delaware County, PA
All have hi/n/low shifters. The shifter will only go back and foward for Hi/neutral/low from factory. It also goes left/right to lock the center diff if someone added it. No 03's came with it from the factory.
Thread Starter
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Three Wheeling
Joined: Oct 2018
Posts: 55
Likes: 5
From: Arizona
Okay, the Hi/Low shifter I believe it was the transfer case light (amber) that went on with the chime before the noises started.
Last edited by Frtpilot; Feb 6, 2019 at 01:02 PM.
Camel Trophy
Joined: Nov 2015
Posts: 3,560
Likes: 834
From: Staten Island, NY
the cdl neutral warning light on the dash will come on in an '03 disco when the t-case is shifted into the neutral position. (gear wheels with an x over them.) i believe this light is orange.
the cdl UNLOCKED warning light on the dash should not come on in an '03 disco unless it has had a lockable t-case installed. this light is the red "tie fighter."
the cdl UNLOCKED warning light on the dash should not come on in an '03 disco unless it has had a lockable t-case installed. this light is the red "tie fighter."
Pro Wrench
Joined: Apr 2018
Posts: 1,516
Likes: 442
From: SE PA
I would say there's a good chance the transfer case may be trashed. I have no personal experience driving in Low more than a handful of times at low speeds (traversing soft ground for a couple hundred feet), however this is taken from the owners manual"
Low range (‘L’)Low range should be used ONLY in situations where low speed manoeuvering is necessary, such as reversing a trailer or negotiating a boulder-strewn river bed. Also use low range for more extreme off-road conditions where progress in high range cannot be maintained. DO NOT attempt to use LOW range gears for normal road driving.
Hopefully others can offer some additional real world experience using Low range.
Low range (‘L’)Low range should be used ONLY in situations where low speed manoeuvering is necessary, such as reversing a trailer or negotiating a boulder-strewn river bed. Also use low range for more extreme off-road conditions where progress in high range cannot be maintained. DO NOT attempt to use LOW range gears for normal road driving.
Hopefully others can offer some additional real world experience using Low range.
Rock Crawling
Joined: Nov 2012
Posts: 411
Likes: 102
From: Delaware County, PA
From what you've described, sounds like the t-case has failed. Either have someone who knows Rovers check it, or start the removal process so you can disassemble and see what's going on in there. Great time to get a case with CDL function if you'll use it. If not you can get a non-CDL cheaper or rebuild yours.