AWD drive malfunction

[Deception]

I have an 07 Limited and lately the AWD isnt working properly, it tries to engage, the esc goes on, and then the AWD drive light comes on, and after a while it goes off, but will come back on when it tries to kick in the rear wheels into drive,

What could the issue be? Before i head to my app to get it checked out, next monday

[fear24]

as i understand....the awd system is only good up to speeds 25 mph and below. above that, it is not engaged.

you didn't specifically mention the scenario when this happens...but...that could be one of the culprits.

[Deception]

From a stop, when im trying to go on icy roads, it will try to engage, then the light comes on it and its in operable

I know its only good for slow speeds

[fear24]

you have a lock button on the dash...i'm assuming it is engaged.

for some reason, i'm betting this isn't like a rav4 or crv system...and definately not a subaru set-up, meaning, i don't think the awd will kick in automatically like the others do when it detects wheel slippage. i'm guessing that it has to be locked in for it to work.

if you have it locked in and it still wont' engage...and if you still have a warranty...it should be well worth a visit to the dealership to diagnose and get repaired.

[sienna1]

In normal mode (AWD Lock not selected), the system functions like a FWD vehicle. If it detects a loss of traction, the system will automatically apply power to the rear (AWD mode) to regain traction, it will then return to FWD mode when traction is regained. The AWD LOCK function (when engaged) will apply power to all wheels for increased traction (similar to a transfer case/differential lock) but will automatically dis-engage above approx 20KPH to prevent damage to the system.

[Deception]

it happens regardless of AWD lock or not, just faster if its locked, and no the car is not under warranty any more

[sienna1]

Originally Posted by Deception

it happens regardless of AWD lock or not, just faster if its locked, and no the car is not under warranty any more

If it's the AWD light on the instrument cluster, then it's indicating a problem with the system. There should be a code set in the ECU but they are usually not accessible with a generic OBD scan tool. It could be as simple as a low fluid level in the transfer-case or impending sensor failure.

[Deception]

So i took it in today, after 2 hours they came to me saying they couldnt find the problem and waiting on Hyundai tech to help, 2 hours after they came back and said the Coupler needed to be replaced at a cost of 2030.00.

It also gave them codes B0E00 U3A00.

Im a little skeptical, not sure as sometimes it works and sometimes it doesnt

Any other advice

[sienna1]

Originally Posted by Deception

So i took it in today, after 2 hours they came to me saying they couldnt find the problem and waiting on Hyundai tech to help, 2 hours after they came back and said the Coupler needed to be replaced at a cost of 2030.00.

It also gave them codes B0E00 U3A00.

Im a little skeptical, not sure as sometimes it works and sometimes it doesnt

Any other advice

www.fourgreen.com - Hyundai/Kia - VERACRUZ - COUPLING ASSY-4WD - 4780024700

You can sign up to HMASERVICE, it free and you'll have access to a lot of information.

[sienna1]

Originally Posted by Deception

So i took it in today, after 2 hours they came to me saying they couldnt find the problem and waiting on Hyundai tech to help, 2 hours after they came back and said the Coupler needed to be replaced at a cost of 2030.00.

It also gave them codes B0E00 U3A00.

Im a little skeptical, not sure as sometimes it works and sometimes it doesnt

Any other advice

The system is basically a magnetic clutch (no servicing required)controlled by a 4WD ECU. You can always check the electrical connector on the coupler. Could be loose or contaminated.