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Old 06-13-2021, 10:40 PM   #1
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Brand: Thor Motor Coach
State: Colorado
Posts: 10
THOR #11314
Coach Stairs

I own a 2017 Thor Synergy. After 4 years and 22000 miles the coach stairs sometimes open and sometimes won't. No rhyme or reason. Just sometimes work and sometimes won't. Do any of you more experienced RV owners have any suggestions?

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Old 06-13-2021, 10:49 PM   #2
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Brand: Thor Motor Coach
State: Missouri
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THOR #6903
Plastic gears fail but yours may be a short in the motor

Be sure you keep the pivot points clean and lubricated
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Old 06-13-2021, 10:59 PM   #3
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Brand: Thor Motor Coach
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THOR #11314
Pivot Points are clean and lubricated but you make a good point regarding a possible short in the motor. Is that repairable or does the motor need to be replaced? Thanks for your suggestions.
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Old 10-11-2021, 05:58 PM   #4
lwj
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Brand: Thor Motor Coach
State: Nevada
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THOR #23133
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Originally Posted by jrp81752@yahoo.com View Post
I own a 2017 Thor Synergy. After 4 years and 22000 miles the coach stairs sometimes open and sometimes won't. No rhyme or reason. Just sometimes work and sometimes won't. Do any of you more experienced RV owners have any suggestions?
The door close sensor on my Synergy is located on the bottom of the screen door. It was installed with two sided tape which got pushed out just a smidge from its original installation location, which prevented the receptor sensor from acknowledging whether the door was open or closed. I repositioned the sensor on the bottom of the screen door and it began working properly again. HOWEVER, I was just on a trip and the stairs ceased raising or closing despite the sensors seemingly in the correct position. Lookin to trouble shoot this. Did you get your issue resolved? If so, was it something besides the sensor getting out of place? Thanks!
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Old 10-11-2021, 06:26 PM   #5
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Brand: Thor Motor Coach
Model: Miramar
State: California
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THOR #22927
The motor could be going out on you. Also check your ground wire underneath. Make sure itís getting good contact.
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Old 10-11-2021, 06:42 PM   #6
lwj
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Brand: Thor Motor Coach
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THOR #23133
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Originally Posted by smithgarnat@aol.com View Post
The motor could be going out on you. Also check your ground wire underneath. Make sure itís getting good contact.
Will do, thanks for the suggestions.
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Old 10-11-2021, 06:46 PM   #7
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Brand: Thor Motor Coach
Model: Miramar
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THOR #22927
If you do need a motor, Amazon
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Old 10-11-2021, 11:00 PM   #8
lwj
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Brand: Thor Motor Coach
State: Nevada
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THOR #23133
Quote:
Originally Posted by smithgarnat@aol.com View Post
The motor could be going out on you. Also check your ground wire underneath. Make sure itís getting good contact.
Also, apparently the stairs motor is one of a few electrical items which are connected directly to the chassis battery, and not the coach batteries. The fuse to between the motor and the chassis battery is located on a panel connected to and located on the side of the battery, which has fuses which can go blow. Tomorrow, I intend to pull the cover to the chassis battery, which is a bit cumbersome on a Mercedes Sprinter, and see if that fuse has blown. Easier and cheaper than pulling/replacing the staircase motor for sure. Wish me luck, and thanks for your advice as well!
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Old 10-12-2021, 04:39 PM   #9
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Brand: Thor Motor Coach
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THOR #11314
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Originally Posted by lwj View Post
The door close sensor on my Synergy is located on the bottom of the screen door. It was installed with two sided tape which got pushed out just a smidge from its original installation location, which prevented the receptor sensor from acknowledging whether the door was open or closed. I repositioned the sensor on the bottom of the screen door and it began working properly again. HOWEVER, I was just on a trip and the stairs ceased raising or closing despite the sensors seemingly in the correct position. Lookin to trouble shoot this. Did you get your issue resolved? If so, was it something besides the sensor getting out of place? Thanks!

Thanks for the suggestions. While the motorhome was in for winterization service and slide service the stairs were checked. All wires and connections checked out. No fuse issues. The conclusion is motor needs to be replaced. The unit is in storage now. I will attack this problem in March before or next trip.
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