Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

MPH light on speedometer dims ???

Thread Tools
 
Search this Thread
 
Old Jun 23, 2006 | 02:31 PM
  #1  
landl's Avatar
landl
Thread Starter
Racer
10 Year Member
 
Joined: Jun 2003
Posts: 303
Likes: 1
From: Portland, Oregon . To err is human, to forgive is NOT company policy
Default MPH light on speedometer dims ???

The MPH light on my speedometer dims and then brightens again.
The other lights do not do this. Just the MPH light.
Anyone else have this happen?

2003 MSG A4 Vert
Reply
Old Jun 23, 2006 | 02:34 PM
  #2  
Fastbird's Avatar
Fastbird
Race Director
20 Year Member
Pro Mechanic
Liked
Community Favorite
 
Joined: Mar 2004
Posts: 12,466
Likes: 886
From: Fort Wayne IN
2025 C5 of the Year Finalist - Modified
C5 of Year Finalist (performance mods) 2019
2017 C5 of the Year Finalist
2016 C5 of the Year Finalist
2015 C5 of the Year Finalist
Default

Originally Posted by landl
The MPH light on my speedometer dims and then brightens again.
The other lights do not do this. Just the MPH light.
Anyone else have this happen?

2003 MSG A4 Vert
Mine does the same thing.........I was thinking it was something to do with the ambient lighting being picked up by the sensor, but I'd like some confirmation as to what's going on.
Reply
Old Jun 23, 2006 | 03:16 PM
  #3  
rws.1's Avatar
rws.1
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
Default

The apparent change in speedometer brightness is corelated to the speed at which you are driving.There is a receptor in the brain that releases seratonin as the pulse, respiration and blood pressure increase. The release of seratonin causes the pupils to dilate and let in more light.
When you drive slowly you get bored,your pupils constrict and let in less light.
Reply
Old Jun 23, 2006 | 04:07 PM
  #4  
Fastbird's Avatar
Fastbird
Race Director
20 Year Member
Pro Mechanic
Liked
Community Favorite
 
Joined: Mar 2004
Posts: 12,466
Likes: 886
From: Fort Wayne IN
2025 C5 of the Year Finalist - Modified
C5 of Year Finalist (performance mods) 2019
2017 C5 of the Year Finalist
2016 C5 of the Year Finalist
2015 C5 of the Year Finalist
Default

Originally Posted by rws.1
The apparent change in speedometer brightness is corelated to the speed at which you are driving.There is a receptor in the brain that releases seratonin as the pulse, respiration and blood pressure increase. The release of seratonin causes the pupils to dilate and let in more light.
When you drive slowly you get bored,your pupils constrict and let in less light.
Good answer!
Reply
Old Jun 23, 2006 | 04:08 PM
  #5  
tsts's Avatar
tsts
Drifting
15 Year Member
 
Joined: Oct 2004
Posts: 1,975
Likes: 9
From: "Philly" Pennsylvania
Default

Originally Posted by rws.1
The apparent change in speedometer brightness is corelated to the speed at which you are driving.There is a receptor in the brain that releases seratonin as the pulse, respiration and blood pressure increase. The release of seratonin causes the pupils to dilate and let in more light.
When you drive slowly you get bored,your pupils constrict and let in less light.
Oh Thank God! I thought Spock was beaming me messages and I couldn't translate them.
Reply
Old Jun 23, 2006 | 04:55 PM
  #6  
landl's Avatar
landl
Thread Starter
Racer
10 Year Member
 
Joined: Jun 2003
Posts: 303
Likes: 1
From: Portland, Oregon . To err is human, to forgive is NOT company policy
Default

Originally Posted by rws.1
The apparent change in speedometer brightness is corelated to the speed at which you are driving.There is a receptor in the brain that releases seratonin as the pulse, respiration and blood pressure increase. The release of seratonin causes the pupils to dilate and let in more light.
When you drive slowly you get bored,your pupils constrict and let in less light.
LOL

Reply
Old Jun 23, 2006 | 05:34 PM
  #7  
rcs128's Avatar
rcs128
Melting Slicks
15 Year Member
 
Joined: Apr 2005
Posts: 3,469
Likes: 4
Default

Um, yea, it's either the above theory or the sensitivity of the little light sensor above the buttons for the DIC...
Reply
Old Jun 23, 2006 | 07:18 PM
  #8  
w4wt's Avatar
w4wt
Heel & Toe
 
Joined: Aug 2005
Posts: 24
Likes: 0
From: Cumming GA
Default

Yep, I've noticed mine does it too. Seems to be light sensitive. Mostly notice it in the morning going to work as I go through longer shady areas then pop out into sun.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Jun 23, 2006 | 07:37 PM
  #9  
KidCid's Avatar
KidCid
Burning Brakes
15 Year Member
 
Joined: Apr 2004
Posts: 1,235
Likes: 2
From: Haymarket VA
CI 7-8 Veteran
Default

It is light sensitive. If you watch it long enough you'll notice that it brightens and dims in connection with the HUD. Of course if you watch it that long you'll probably hit something.
Reply
Old Jun 23, 2006 | 10:25 PM
  #10  
Frozenfire's Avatar
Frozenfire
Burning Brakes
 
Joined: Jun 2005
Posts: 896
Likes: 1
From: Ewing NJ
Default

Oh thank God. I thought I was having a mini stroke.
Reply

Get notified of new replies

To MPH light on speedometer dims ???





All times are GMT -4. The time now is 09:04 AM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE