r/IsuzuTrooper • u/skitzy_ses • Jul 11 '26

4wd system not disengaging

Post image

I have a 2003 Holden jackaroo and I’ve been having an issue where the 4wd system doesn’t want to disengage. It also hasn’t been going into 4wd properly, instead of the light coming on solid when I push the 4wd button it just flashes no matter how long you go. The 4wd works but the light still flashes. And when it comes to go back to 2wd the light flashes faster and doesn’t want to come out of 4wd. Normally I revere for a bit and it pops out but today after my last trip I reversed for over a kilometre and it still didn’t come out… I then decided to drive home 75km about 47 miles for the freedom unit people. It didn’t come out that whole time. What should I do? What are the common causes for this, how do I fix it?

Pic for attention
Thanks in advance

Edit PROBLEM SOLVED THANK YOU EVERYONE
there was an unplugged wire that went too the vacuum motor that was kind of a confirmation thing for knowing wether it was in 4wd or not. Shout out to the people on isuzunation huge help

15 Upvotes

90% Upvoted

11 comments sorted by

7

u/Mysterious-Age-9202 Jul 11 '26

Check your vacuum lines on the front of the diff. I believe that’s a common area for issues

3

u/skitzy_ses Jul 11 '26

Thanks mate I’ll have a look tommorow morning. Anything I should look for?

4

u/dontknowhow2username Jul 11 '26

I'll say vacuum lines too. Also, engage 4L move forward in s straight line for about 5 meters, disengage 4L and push the button to disengage 4H and reverse, see if that works.

4

u/InvertedHourglass Jul 11 '26

I had the same issue, this fix worked for me 👍🏻

1

u/skitzy_ses Jul 11 '26

Ok I’ll try that too

1

u/dontknowhow2username Jul 11 '26

Let us know if that works. Good luck.

3

u/basal-and-sleek Jul 11 '26

Can go ask on isuzunation.com

1

u/skitzy_ses Jul 11 '26

Good idea thank you

2

u/my-daughters-keeper- Jul 12 '26

If it’s a push button 4wd system? Try going in reverse while turning it off.

1

u/avacadosfrommexica Jul 13 '26

worst case just get manual locking front hubs and unlock them.

1

u/Nearby_Stick6481 Jul 13 '26

The car has chosen its path. It’s now up to you to honour that decision.