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All help welcomed - Adam]]> Stereo / Lighting / Accessories pitts12driver https://www.planetnautique.com/vb5/forum/other-related-topics/stereo-accessories/692599-direct-replacement-for-an-mm105 https://www.planetnautique.com/vb5/forum/other-related-topics/stereo-accessories/692526-jl-audio-mm100-radio-tuner-problem Tue, 11 Aug 2026 23:41:13 GMT Hello PN, Dealing with a JL Audio MM100 stock head unit in a 2021 G23 that has forgotten how to tune into radio stations. AM, FM, weather band...
Dealing with a JL Audio MM100 stock head unit in a 2021 G23 that has forgotten how to tune into radio stations.
AM, FM, weather band all just have 0.0 where the frequency should be:


Bluetooth audio works fine, haven't tried USB audio.

Things I have tried:

MM hard reset procedure - https://support.garmin.com/en-US/?fa...se3nHY30XuQmn9

MM software update - https://support.garmin.com/en-US/?fa...mQ3nAqtoy0qApA



I am considering trying the bootloader reset, but being that I am not stuck on the splash screen, I don't think that is the issue: https://support.garmin.com/en-US/?fa...OA4ahRBOFxFXe5

Anyone had a similar issue or have any insight as to what the fix should be?

I'm decently techy, but also don't want to brick the unit completely.

Guess next question would be, if I do brick it messing with the programming, is a MM-105 plug an play for a 2021 G23? I know they started putting them in some 2022 models and then also reverted to some MM-100s, so hoping so?

Appreciate any insight or advice.

Thanks,

Joe


]]> Stereo / Lighting / Accessories Jgran https://www.planetnautique.com/vb5/forum/other-related-topics/stereo-accessories/692526-jl-audio-mm100-radio-tuner-problem