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06-15-2020, 05:36 AM
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#1
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Montana Fan
Join Date: Nov 2018
Location: Fort Mill
Posts: 108
M.O.C. #22972
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tail light with back up light taking on water
We have 3720 RL 2019 both rear lens are taking on water and hold it ,both back up lens , .I do not know how the water is getting in side the lens. what is so bad is it want drain out. Does any one have any ideas? Thanks Jerome And Judy
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06-15-2020, 06:49 AM
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#2
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,657
M.O.C. #9969
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Check that the lens is mounted correctly. Some have a tiny weep hole and I had some that were mounted with the weep hole up allowing water in, but couldn't drain out. Removed lens and remounted with weep hole down and problem solved.
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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06-15-2020, 08:39 AM
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#3
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Montana Master
Join Date: May 2020
Location: UPLAND
Posts: 1,255
M.O.C. #26190
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Yeah, I will check the weep hole on mine. My lenses let moisture in whenever I wash it.
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2019 Keystone Montana 3560RL, 2020 Chevy 2500 HD, Firestone airbags, Air Lift wireless compressor, Curt gooseneck, 20K Reese Goosebox, TST-507, USMC combat vet & retired LEO. Robert, Anika, Breanna, Dylan (daughter-in-law Stephanie). & our Great Pyrenees Layla
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06-15-2020, 08:54 AM
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#4
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,678
M.O.C. #24086
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There was a TSB about this. People who had issues reported it, they tell you to take it to your dealer. Dealer confirms it. Keystone sends replacement lights WITHOUT rubber gasket seals which leak. Use silicon caulk to seal the lights.
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06-15-2020, 11:16 AM
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#5
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Montana Master
Join Date: May 2017
Location: new caney
Posts: 1,050
M.O.C. #19873
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It is cheaper to just buy a new light at parts house and install yourself than take it to a dealer and leave it for a week or 2. This would be a good time to change out the back-up light to a tail light. Just install new tail light and wire it to the other tail light. Many on this forum has done this as the back-up light is useless.
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06-15-2020, 04:59 PM
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#6
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Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,892
M.O.C. #20753
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Contact keystone. there is a tSB on it and they will send you replacements. get pix of the taillights full of water
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Mocha, one-eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW KJ5CQH
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06-16-2020, 10:50 PM
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#7
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Montana Fan
Join Date: Mar 2014
Location: New Port Richey
Posts: 438
M.O.C. #14092
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Quote:
Originally Posted by Texan
This would be a good time to change out the back-up light to a tail light. Just install new tail light and wire it to the other tail light. Many on this forum has done this as the back-up light is useless.
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I have 2 tail lights and 2 back up lights. I like that my RV came with 2 back up lights. I find them very useful. IMO I don't need 4 tail lights.
My RV is a 2012 and I replaced my marker and tail light bulbs with leds. I have a Furion back up camera and the bright LED bulbs in my back up lights work great and illuminate behind me when needed. The back up lights also warn people that I am backing up.
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2012 Silverado 3500HD|4x4|Crew Cab|long bed|Dually
2012 Montana 3750FL
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06-17-2020, 04:50 AM
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#8
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,137
M.O.C. #25165
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Our 2019 3791RD had that on PDI day. The water had been inside so long that the circuit board had rust on it. You could see it through the clear lens inside the backup light. CW replaced both of them. No problems since.
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Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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06-21-2020, 07:48 AM
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#9
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New Member
Join Date: Feb 2019
Location: Spring
Posts: 5
M.O.C. #23423
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I have a 2019 3791 and I have the same issue with water inside my light. I took it apart, dried it out and applied silicone around the outside. I have also noticed that after I found the water, I now get a check trailer wiring error, that sporadically appears in my tuck when towing. This could happen repeatedly for 10 minutes straight or I could drive for hours without it happening. I am not sure if this was just a coincidence or due to the water in the light and it shorted something out, but I have an appointment with the dealer in regards.
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06-24-2020, 01:57 PM
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#10
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Montana Master
Join Date: May 2017
Location: South East NC
Posts: 1,768
M.O.C. #19865
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While I’m Fl for the winter informed my CE dealer I had water in a backup light. Drained and resealed. When I arrived home in April found a recall letter from Keystone. As it was empty now no replacement. Added a little water sent them a picture with the vin and they sent me a new lens. Dealership would replace if requested as recall. I may still have that letter if anyone wants an EMAIL copy. Mine is a 2019 3761 FL
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John & Patty
2022 3855 BR
2019 Lariat F350 4X4 Dually
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06-24-2020, 02:09 PM
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#11
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Seasoned Camper
Join Date: Jul 2019
Location: Pahrump
Posts: 65
M.O.C. #24555
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Tail lights
Quote:
Originally Posted by JEROME
We have 3720 RL 2019 both rear lens are taking on water and hold it ,both back up lens , .I do not know how the water is getting in side the lens. what is so bad is it want drain out. Does any one have any ideas? Thanks Jerome And Judy
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We had a notice on our 2019 3791RD. I called Keystone and I had the option of taking it to the dealer or send them to us. They sent them to us.
I had to send them a picture of each lens where the rust was first.
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06-25-2020, 06:42 AM
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#12
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Montana Fan
Join Date: Jun 2019
Location: Summerville
Posts: 138
M.O.C. #24370
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Jerome
We have a 2019 3791RD that had similar issue with our taillights.
Keystone notified us that a recall was issued for this and we went by the dealership and had it taken care of
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Frank Scott
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06-25-2020, 08:36 AM
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#13
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Montana Fan
Join Date: Aug 2014
Location: On the Road
Posts: 166
M.O.C. #14645
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This was at PDI, replaced under warranty. They are supposed to be sealed units. If it happens again, I'll probably drill a small weep hole in the bottom.
I did convince the dealership to let me swap them out myself so that I could do a better job with the butyl tape.
__________________
Retired FULLTIMERS that Travel & Work -- 2020 3931FB Legacy Edition -- OEM Sailun S637T's -- 2017 F350 DRW, 4.10 axle, 6.7L -- PullRite OE Puck Super-5th 25K hitch -- Dish Network w/ Winegard G2 automatic portable antenna -- 50A Surge Guard portable -- WiFi Ranger Elite -- Blue Streak -- YourBestAddress.com -- RVSA Certified Technician -- The UnBeetable Experience
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06-25-2020, 08:46 AM
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#14
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Montana Master
Join Date: May 2017
Location: South East NC
Posts: 1,768
M.O.C. #19865
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A Phillips head screwdriver, medium to large wire nuts, 20 minutes. DIY easy
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John & Patty
2022 3855 BR
2019 Lariat F350 4X4 Dually
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06-26-2020, 10:11 AM
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#15
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Montana Fan
Join Date: Aug 2014
Location: On the Road
Posts: 166
M.O.C. #14645
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Quote:
Originally Posted by CaptnJohn
A Phillips head screwdriver, medium to large wire nuts, 20 minutes. DIY easy
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Best to use a square drive/Robertson bit if the screw allows, the Phillips always makes a mess of these screws, not a tight enough fit.
__________________
Retired FULLTIMERS that Travel & Work -- 2020 3931FB Legacy Edition -- OEM Sailun S637T's -- 2017 F350 DRW, 4.10 axle, 6.7L -- PullRite OE Puck Super-5th 25K hitch -- Dish Network w/ Winegard G2 automatic portable antenna -- 50A Surge Guard portable -- WiFi Ranger Elite -- Blue Streak -- YourBestAddress.com -- RVSA Certified Technician -- The UnBeetable Experience
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06-26-2020, 10:15 AM
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#16
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Montana Master
Join Date: May 2017
Location: South East NC
Posts: 1,768
M.O.C. #19865
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I have both in my bit lit. Might be wrong but fairly sure I used a Phillips in the DeWalt drill/driver. The back seal is a foam pad so although tight the screws came out easily. Also had a lot of wire nuts and needed larger than I thought I would. Fast and easy though
__________________
John & Patty
2022 3855 BR
2019 Lariat F350 4X4 Dually
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07-03-2020, 12:09 PM
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#17
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Montana Fan
Join Date: Nov 2018
Location: Fort Mill
Posts: 108
M.O.C. #22972
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Please, we would really like a copy of the letter. We have water issues in lights also.
Jerome & Judy Poole catstorm@aol.com
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07-03-2020, 03:03 PM
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#18
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Seasoned Camper
Join Date: Jul 2019
Location: Pahrump
Posts: 65
M.O.C. #24555
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water in lights
Quote:
Originally Posted by JEROME
Please, we would really like a copy of the letter. We have water issues in lights also.
Jerome & Judy Poole catstorm@aol.com |
Call Keystone Customer service and let them know about it. They should send them to you.
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