Dryer timer not advancing

I suspect the "timer" on our dryer has stopped functioning. It heats fine, but the timer does not advance and the dryer won't shut off until the door is opened. (However I have not tried turning the dial to "off" to see if it shuts off). Is there anything that I should check to make sure it's the timer?
Tried searching online for the part to replace it (if that is where the problem lies) but am confused at to which part # would be the right one! Maytag dryer model is MEDC215EW1.
Can anyone confirm the part # for this dryer if this is what I need?

Thanks for any/all help or suggestions!

 

Does the timer work in timed dry? there might be 2 silver strips on back wall inside dryer. If there try cleaning with rubbing alcohol or something like that. Let us know if strips are there and if dryer works on timed dry.

 

Just an update on my dryer timer issue. Hubby said to just go ahead and order a new timer (we did that a couple of months ago) and he finally got it installed last night! I no longer have to use the timer on my stove to monitor my drying time!lol

At first I thought it wasn't working properly, the timer "buzzed" but the dial was only showing it at the "cool down" marking. I removed the clothes, turned the dryer to off and went about my business.

After returning to do another load of laundry I noticed the timer had now advanced to the "timed" drying marking! WTH??!! The dryer wasn't drying (it shouldn't have been as I hadn't hit the start button), but thought it was pretty odd that the timer was still advancing!!

I asked him if there was any possibility that some of the wires weren't connected properly and he assured me there was only one way to connect them, so we knew that wasn't the issue.

He was almost ready to take the new timer back out, but decided to turn the dial knob on the dryer to make sure there wasn't anything loose there. I heard the "clicking" as he was turning the dial....hadn't heard that when I used it prior.

Tossed in another load of laundry and started up the dryer....yay, it's now functioning as it should!

Hope everyone's New Year starts out this well! :-)