Dyna Glide Models Super Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Sponsored by:
Sponsored by:

Red light

Thread Tools
 
Search this Thread
 
Old Aug 24, 2022 | 08:31 PM
  #1  
Vipers Harley's Avatar
Vipers Harley
Thread Starter
|
Road Captain
5 Year Member
Liked
Loved
Community Favorite
Joined: May 2018
Posts: 688
Likes: 200
From: In my own world
Default Red light

What is the round red light just to the right of the speedo needle? 2012 fat bob I'm assuming a security light? However the bike supposedly does not have security but this light will light up and turn signals stop working till the light goes off.
it happens very intermittently.
not yet sure if it has a tsm or tssm? No fob though so again I assume it's a tsm?

I guessing TSM going bad?
 
Reply
Old Aug 24, 2022 | 10:13 PM
  #2  
Jay Too's Avatar
Jay Too
Ultimate HDF Member
Veteran: Army
Joined: Jun 2020
Posts: 8,140
Likes: 2,716
From: Alexandria, Virginia
Default

Originally Posted by Vipers Harley
What is the round red light just to the right of the speedo needle? 2012 fat bob I'm assuming a security light? However the bike supposedly does not have security but this light will light up and turn signals stop working till the light goes off.
it happens very intermittently.
not yet sure if it has a tsm or tssm? No fob though so again I assume it's a tsm?

I guessing TSM going bad?
Check your oil sending unit aka oil pressure switch. Make sure the wire isn't broken or disconnected

https://itstillruns.com/harley-david...-12179658.html
 

Last edited by Jay Too; Aug 24, 2022 at 10:15 PM.
Reply
Old Aug 24, 2022 | 10:21 PM
  #3  
2500hdon37s's Avatar
2500hdon37s
Stellar HDF Member
10 Year Member
Liked
Loved
Community Favorite
Joined: May 2014
Posts: 3,155
Likes: 1,728
From: Mid-MO
Default

Check out your front brake lever… they’re well known for getting a little sticky with age, grime, and corrosion not allowing the lever to return to fully extended and press the switch that turns off the brake lights. Try bumping the front brake lever forward more or a light stab and quick release of the lever next time the light comes on. If that’s the case the light will turn off immediately.

the red light on the dash is a body control module error light I do believe. At least I’ve had the light come on a few times and the sticky front brake lever has always been the culprit. Another quick check to see if the lever might be the issue is to see if your lever is sticking while parked with the ignition on and see if the brake lights stay on when you gently release the lever.
 
Reply
Old Aug 24, 2022 | 11:03 PM
  #4  
TownesVanZandt's Avatar
TownesVanZandt
Cruiser
5 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2021
Posts: 181
Likes: 87
From: Upstate NY
Default

My 2012 Fatbob owners manual calls it Electrical Systems lamp. Typically brake switch or a bulb out.
 
Reply
Old Aug 25, 2022 | 06:31 AM
  #5  
RANGER73's Avatar
RANGER73
Club Member
Veteran: Army
Joined: Sep 2010
Posts: 15,420
Likes: 7,118
From: Beyond Fucital
Default

As a process of elimination.
The signals stop working when the light is on.
Left side, right side or both sides?
This would indicate a
Right or left side, Bad bulb or wire
Both sides, a bad/failing TSM
 
Reply
Old Aug 25, 2022 | 07:08 AM
  #6  
NEWROADSTER's Avatar
NEWROADSTER
HDF Community Team
5 Year Member
Photogenic
Liked
Community Favorite
Joined: Mar 2017
Posts: 694
Likes: 820
From: East Texas
Community Team
Default

Mine was the rear brake light switch that stopped working intermittently.
 
Reply
Old Aug 25, 2022 | 07:08 AM
  #7  
Vipers Harley's Avatar
Vipers Harley
Thread Starter
|
Road Captain
5 Year Member
Liked
Loved
Community Favorite
Joined: May 2018
Posts: 688
Likes: 200
From: In my own world
Default

Thank you too all who replied and does. Appreciate it
 
Reply
Old Aug 25, 2022 | 09:37 AM
  #8  
FXD2003Rider's Avatar
FXD2003Rider
Administrator Emeritus
Veteran: Army
15 Year Member
Liked
Community Favorite
Joined: Feb 2007
Posts: 9,192
Likes: 965
From: Harmelen (The Netherlands, Europe)
Riders Club Member
Default

Originally Posted by Vipers Harley
What is the round red light just to the right of the speedo needle? 2012 fat bob I'm assuming a security light? However the bike supposedly does not have security but this light will light up and turn signals stop working till the light goes off.
it happens very intermittently.
not yet sure if it has a tsm or tssm? No fob though so again I assume it's a tsm?

I guessing TSM going bad?
2012 Dyna Models have a Body Control Module (BCM) and no TSM or TSSM.
Does it throw up any error codes?
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-1

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-3

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-4

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-5

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-6

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-7

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-8

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
story-9

The Best and Worst Harley-Davidson Moves of 2025

 Verdad Gallardo
Old Aug 25, 2022 | 02:22 PM
  #9  
Vipers Harley's Avatar
Vipers Harley
Thread Starter
|
Road Captain
5 Year Member
Liked
Loved
Community Favorite
Joined: May 2018
Posts: 688
Likes: 200
From: In my own world
Default

Originally Posted by FXD2003Rider
2012 Dyna Models have a Body Control Module (BCM) and no TSM or TSSM.
Does it throw up any error codes?
yes several codes

P0562
B2121
B2173
B2272
B2255
U0100
 
Reply
Old Aug 25, 2022 | 02:26 PM
  #10  
Vipers Harley's Avatar
Vipers Harley
Thread Starter
|
Road Captain
5 Year Member
Liked
Loved
Community Favorite
Joined: May 2018
Posts: 688
Likes: 200
From: In my own world
Default

Thank you too all who replied and reply
 
Reply



All times are GMT -5. The time now is 11:47 AM.

story-0
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-1
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-2
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-3
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-4
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-5
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-6
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-7
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-8
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE
story-9
The Best and Worst Harley-Davidson Moves of 2025

Slideshow: A clear-eyed look at what actually worked for Harley this year, and what quietly undermined its progress.

By Verdad Gallardo | 2025-12-29 17:10:48


VIEW MORE