Hi I've just bought a 2015 challenger
When 4wd is selected I get a ting ting ting noise coming from the front. The wheels are straight. switch back to 2wd and the noise stops. It clunk's back in to 2wd after going forwards and backwards a few times. No tinging noise when in 2wd
There is no actuator on my front diff. Just what looks like a vacum line
The 4wd list flashes initially then goes solid once you've moved, stays solid when 4hl and 4ll are selected with orange tbox light illuminated all go out when shifted back to 2wd.

Thank you for any help