LR3: 7 degrees F = Transmission fault? - Defender Source
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Old January 8th, 2015, 11:06 AM
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Russell
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LR3: 7 degrees F = Transmission fault?

Returned from a trip last night (didn't see any D's in NYC or Josh w/ his frozen hair) where my LR3 was parked outside for 2 days in this < 10 degree weather. Everything was normal except for a new transmission fault. The only issue I could determine was the dash display where "sport" and the gear number did not display when moving the shifter to the left. Toggling through the display menus was slow as well. The transmission functioned fine in auto and auto-manual, no issues there.
The fault cleared and everything was back to normal when starting in the garage this morning (40F) and driving into work (9F).
Thoughts on what I should look for or is this typical?
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Old January 8th, 2015, 11:15 AM
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Do nothing. Frozen electronics.
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Old January 8th, 2015, 11:45 AM
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Russell
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Quote:
Originally Posted by Rocky View Post
Do nothing. Frozen electronics.
Could be, but then wouldn't this occur to all LR3s?
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Old January 8th, 2015, 11:47 AM
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It's a common fault when voltage is very low, for example a very cold start after sitting for a few days.

The other culprit is usually corrosion in the transfer case control module and connector, creating high resistance on that CAN bus.

But first, check your battery. How old is it?
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Old January 8th, 2015, 12:36 PM
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Russell
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Quote:
Originally Posted by transientmechanic View Post
It's a common fault when voltage is very low, for example a very cold start after sitting for a few days.

The other culprit is usually corrosion in the transfer case control module and connector, creating high resistance on that CAN bus.

But first, check your battery. How old is it?
Thanks for the tips, Adam. I replaced the original battery after the seeing the HDC (??) fault last fall. I will check the t/c control module connector, but thinking it should be fine. Only 55k on the ODO and one salty winter.
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Old January 8th, 2015, 12:44 PM
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One thing to check even if your battery is new, I had a new Interstate battery fitted but the negative post is a tad smaller that what the silly clamps fitted will tighten up to. if you have any growth on the terminal clean it off and check the clamp fits very tight. I had to fit a thin piece of brass shim on the post to get it real tight.
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