I have a 2010 nissan navara st d40 when i go to put it into either 4hi or 4lo the wheels on my dash will continuously flash. When going into 4lo i can hear the transfer case engaging and can feel the ratio of the gears have changed. It does feel to be locked in as i drive a little but light shows that it's not fully engaged? I don't have any abs light warnings either. Any help would be much appreciated