All, I have a 2009 Dodge Challenger R/T, around 109K miles, 5.7L V8, automatic transmission.
Recently I’ve been concerned with the parking brake. Specifically… it wasn’t holding the car on either level or sloped surfaces. I’m concerned with both safety and minimizing the strain on my transmission.
I took it to my regular mechanic. He said the rear brake shoes were fine (thickness, etc.) and was able to adjust the parking brake, and indeed the car will hold firmly on a level surface. However, I noticed when parked on a hill (my driveway, in particular), there’s an obviously rubbing/friction noise/vibration coming from the rear brakes. Meaning, the parking brake was holding some, but not on its own.
So for a second opinion, I took the car to a Dodge dealer. The service advisor told me the parking brake was actually “supplemental” to the transmission when parking on a hill, but they would still check it for me. $150 later… they cleaned and adjusted the parking brake and assured me it worked. The parking brake pedal is indeed significantly firmer to push down, and it does hold very well on flat surfaces. However, again… it doesn’t seem to hold on slopes (same friction/rubbing/vibration noise from the rear).
First, have any of you ever heard of the parking brake being a “supplement” to the transmission on Dodges? This was news to me, but this is admittedly my first Dodge.
Secondly, am I just expecting too much here? Or, put another way… am I wasting time and money getting “regular behavior” diagnoses?