Sponsored

Switching to 4HI - green blinking light?

Bernie

TRD Pro
Well-known member
Joined
Feb 17, 2025
Threads
17
Messages
110
Reaction score
126
Location
23221
Vehicle(s)
2018 Mercedes AMG GTc
I have a routine drive that I take weekly on a straight paved road with stoplights and speeds from 35-55 mph. I use this to make sure I get some time in 4Hi for lubrication purposes. At a stoplight, I put the 4Runner in park, change from 2Hi to 4Hi and put it back in drive. 4Hi blinks in green on the dash for a little bit and then stays solid. What is the blinking telling me? Is it just doing that until the front differential is fully engaged?
Sponsored

 

Joestac

Well-known member
Joined
Nov 21, 2025
Threads
10
Messages
201
Reaction score
160
Location
Austin, TX
Vehicle(s)
2025 4Runner Trailhunter
Page 415 of the manual.

Short answer, yes, blinking until fully engaged. Longer answer, you don't need to come to a full stop to go to and from 4H, just 4L.

"Shifting from “2H” to “4H”

1 Reduce vehicle speed to less

than 62 mph (100 km/h).

2 Push and turn the front-wheel

drive control switch to “4H”.

The “4HI” indicator will come on.

■ Shifting from “4H” to “2H”

1 Reduce vehicle speed to less

than 62 mph (100 km/h).

2 Push and turn the front-wheel

drive control switch to “2H”"
 

SC4Runner

TRD Off-Road Premium
Well-known member
First Name
Fred
Joined
Mar 28, 2025
Threads
5
Messages
171
Reaction score
162
Location
South Carolina
Vehicle(s)
Toyota 4Runner, GMC Truck, Mercury Grand Marquis
I’d try to find a dirt or gravel road if at all possible. I typically engage 4HI about the first 100 yards on dirt.
 

127.0.0.1

SR5
Well-known member
Joined
Oct 9, 2025
Threads
2
Messages
390
Reaction score
298
Location
earf
Vehicle(s)
a bunch of Toyotas
it will wait and blink until gears can sync

change of speed or letting up on the gas usually lets it engage
if it doesn't immediately go solid green
 
 







Top