In hull transducer for Garmin

[watson1987]

My 2018 R31 is on the SB side under the rudder ram assembly when you flip up the middle cockpit seat. Right next to the transom. Small black device that’s about 4 inches round with a single wire coming off the side.

 

[HopTug]

Sorry to bring this up again. In the posts above, there are mentions of the location of the transducer in 2 model years of rt-31. I have a 2019 rt-31. Can anybody trell me the location of the transducer in this model year? I asked the factory, but no response (frustrating).
Thanks in advance.

My 2019 R-31 has the transducer located just forward of the water heater, accessed by opening the hatch in front of the oven.

 

[SunrangerUS]

First thing is to determine if the p79 is just glued on or is it more properly installed in the cup supplied by airmar/garmin. If glued on it might be loose and will not be reliable, unless you flood your bilge accidently like i did. If mounted in the proper cup, check to see if it is low on fluid. Current direction from airmar is to use rv antifreeze, not mineral oil. Mineral oil can deteriorate the sealant used to attach the cup to the hull over time. If it is glued on, you can find a cup at Hodges marine. Same cup fits all p79 sonar. If worried about compatibility, the tag on the cable a foot or so up the cable has all the numbers you need to order the right thing.

 

[AGLyme]

My 2013 RT 31:
Pull the rear bench forward exposing the generator. On the starboard side, look under the raw wash pump. May need a light as it is tucked under the wooden shelf (which holds the raw wash pump.

 

[Brian John]

On my 2022 R31, the transducer is under the refrigerator. Went to take the tug out and got the flashing, removed the frigerator, and sure enough, the transducer was empty. I filled it with pink antifreeze and verified it was working, reinstalled the refrigerator (I have become adept at this), tested the transducer, and read zero "0 ft.".
Scratching my head, trying to figure out what I did wrong. Then it dawned on me I had raised the boat on my lift, and the bunk is directly under the transducer.