Hubs
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
When you turn the 4x4 ****, the hubs *SHOULD* automatically lock. If they dont, you can get out and lock the hubs manually. Its a fail safe.
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Elder User
Joined: Jun 2011
Posts: 930
Likes: 0
From: Los Angeles
I'm soo confused with all this lol. So since most of my driving it around town should I leave it on auto??
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
Leave it on AUTO all the time no matter where you are. When you go off road, and you need 4x4, just flip the switch in the dash. This will lock your front wheels. If it doesnt (you will know because you will still be stuck) get out and manually lock them. Then when you get home, unlock them and fix the reason they didnt lock. You should never need to put it into LOCK unless something fails.
Logistics Pro
Joined: Oct 2011
Posts: 3,953
Likes: 120
From: Mcdonough, GA
1. you develop a vacuum leak and when you select 4x4 the transfer case engages but the vacuum doesn't reach the hubs and they don't lock or
2. the hubs get cruddy on the inside and when you take it out of 4x4 they don't disengage. This means you are running around in 2wd but because the hub or hubs are still locked you are now spinning the front axles and eating up MPG and creating unwanted wear and tear on the front axle. As long as your vacuum lines are in good condition and your hubs are maintaned the system should work fine.
If you have a vacuum leak you can always get out and set them to lock before you need them.
I went to manual hubs because when I got my truck the plastic on the outside of the factory hubs was cracked and allowing water and debris in so they would stick even if I cleand them often. I want to know that when I don't want it in 4x4 the front axle is not turning.
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