I’m driving a 2017, but I figure that if your key fob looks like this, you’re golden.
This all started after a weekend camping with the sidedoor open for hours on end. Per internet legend, this can cause issues…but I didn’t know that as I was trouble shooting.
Troubleshooting
- Replace key fob battery: The key uses a lithium CR2032. These are cheap and available at any drug store. Changing this didn’t solve my problem, so I moved on to something else.
- Change the key fuse: This is located in a box by your left knee. Remove the cover with a Philip’s head screwdriver. The fuse is F38 located in the second row, far right. But that still didn’t fix my issues. Annnnnnnnnd now I’m desperate. On a wing and a prayer, I did the unthinkable.
- Disconnect the battery: Y’all this worked!
Promaster Quick Disconnect
On paper, and very much in theory, the battery beneath your feet has a quick disconnect switch. It’s that gray thing the arrow points to.
I tried for 27 minutes to get that switch to budge. In the end, I used a 10 wrench to remove bolts on the L bracket next to it.
I pumped the brakes and let it sit for 30 minutes. Bad news, had to reset my radio and clock. Good news, my key fob started working!
I’d been quoted $360 by a locksmith and $520 by the dealership for new keys. In the end, the fix was free.
I hope this saves anyone going through this some hassle!
It's Her Van 
11 responses to “What to do when your Promaster Van Key Fob Stops Working”
Thanks for this! I am curious about the open side door legend…what kind of issues are we to expect?
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I found it twice buried in Promaster forums, but I’ve kept my side door open for hours before so, I’m unsure. Also, apparently there’s a trigger on the far end of the side door that can sometimes malfunction with the name fob breaking results (and that requires a dealer visit to fix)
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Oh, interesting! Thanks for this info. I will not test this theory though 😎
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Bookmarking this. Crossing fingers it doesn’t happen, but if it does I’ll be singing your praises.
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Good for you for figuring it out.
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Thanks!
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Thank you for your advice it works
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Glad it helped!
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It worked! Thank you!
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Nice! Glad it worked out for you
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I have a 2017 Promaster City. My battery and the key fuse location doesnt need screws to remove cover.
Since its still a 2017 Promaster series van, there should be no problem trying it at least right?
if I can ask one more question, Ive seen ways to reset key fob by using the ignition switch and performing a repetitious sequence to reset. Does that work for a RAM because they were for other car companies?
thank you
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