CorvetteForum - Chevrolet Corvette Forum Discussion

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

C5 headlights

Thread Tools
 
Search this Thread
 
Old May 11, 2016 | 08:18 PM
Share
  #1  
bobjim3's Avatar
bobjim3
Thread Starter
Intermediate
10 Year Member
 
Joined: Feb 2004
Posts: 30
Likes: 0
From: Liverpool NY
Default C5 headlights
Took my 1999 out of storage today. Upon start-up, the headlights flip up & turn on. They won't turn off until the car is shut off and doors are locked. that happens about 30 seconds later. Any ideas?
Reply
0
Old May 11, 2016 | 08:37 PM
Share
  #2  
RoninC5's Avatar
RoninC5
Racer
 
Joined: Jan 2016
Posts: 479
Likes: 44
From: Northern Colorado
Default
Not enough info but I'll take a guess- see if you have RPO T85. If you do, go to your DIC and turn off Twilight Sentinel... It was an option I believe in 1999 (first year). Hope that helps...?
Reply
0
Old May 11, 2016 | 08:38 PM
Share
  #3  
Velocity_Vette's Avatar
Velocity_Vette
Drifting
 
Joined: Mar 2013
Posts: 1,496
Likes: 353
From: Little Rock Arkansas
Default
EDIT: Beaten to it.

The Twilight Sentinel feature is active and needs to be deactivated. Scroll through "Options" on the DIC until you reach "Twilight Sentinel" and confirm it's status is currently "on". Select "off".
Last edited by Velocity_Vette; May 11, 2016 at 08:38 PM.
Reply
0
Old May 11, 2016 | 08:54 PM
Share
  #4  
Rico7142's Avatar
Rico7142
Drifting
Supporting Lifetime
 
Joined: Feb 2015
Posts: 1,883
Likes: 343
From: Chicagoland
St. Jude Donor '16
Default
Originally Posted by RoninC5
Not enough info but I'll take a guess- see if you have RPO T85. If you do, go to your DIC and turn off Twilight Sentinel... It was an option I believe in 1999 (first year). Hope that helps...?
Reply
0
Old May 11, 2016 | 10:10 PM
Share
  #5  
bobjim3's Avatar
bobjim3
Thread Starter
Intermediate
10 Year Member
 
Joined: Feb 2004
Posts: 30
Likes: 0
From: Liverpool NY
Default
I do not have the twilight sentinel option.
Reply
0
Old May 12, 2016 | 05:51 AM
Share
  #6  
dadaroo's Avatar
dadaroo
Le Mans Master
 
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Default
Sounds like an MF switch issue if the lights are OFF and they still go up.


Mr. Sam
Reply
0
Old May 12, 2016 | 08:41 AM
Share
  #7  
Vetteman Jack's Avatar
Vetteman Jack
Administrator
Supporting Lifetime
Veteran: Navy
St. Jude 20 Year Donor
25 Year Member
Veteran: Reserves
 
Joined: Mar 2001
Posts: 368,324
Likes: 24,777
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Default
Have the MF switch checked for proper operation.
Reply
0
Old May 14, 2016 | 08:47 AM
Share
  #8  
bobjim3's Avatar
bobjim3
Thread Starter
Intermediate
10 Year Member
 
Joined: Feb 2004
Posts: 30
Likes: 0
From: Liverpool NY
Default
Originally Posted by Vetteman Jack
Have the MF switch checked for proper operation.
I see error code B26;7 on the DIC
Reply
0
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

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

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old May 14, 2016 | 08:47 AM
Share
  #9  
bobjim3's Avatar
bobjim3
Thread Starter
Intermediate
10 Year Member
 
Joined: Feb 2004
Posts: 30
Likes: 0
From: Liverpool NY
Default
Originally Posted by bobjim3
I see error code B26;7 on the DIC
Error code: B2647
Reply
0
Old May 14, 2016 | 09:07 AM
Share
  #10  
dadaroo's Avatar
dadaroo
Le Mans Master
 
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Default
That is a problem with the ambient light sensor. Either an open circuit or a short to ground. Either will cause the BCM to turn the HLs and Park lights ON.

I would guess the circuit is open.

Need any DIY info? Not hard to access it by the dash defroster vent.

Mr. Sam
Reply
0
Old May 14, 2016 | 06:02 PM
Share
  #11  
bobjim3's Avatar
bobjim3
Thread Starter
Intermediate
10 Year Member
 
Joined: Feb 2004
Posts: 30
Likes: 0
From: Liverpool NY
Default
Originally Posted by dadaroo
That is a problem with the ambient light sensor. Either an open circuit or a short to ground. Either will cause the BCM to turn the HLs and Park lights ON.

I would guess the circuit is open.

Need any DIY info? Not hard to access it by the dash defroster vent.

Mr. Sam
Thanks for your help. I disconnected the battery & reconnected it. Everything now works. Cleared the codes; they have not returned. Go figure...
Reply
0
Old May 14, 2016 | 06:12 PM
Share
  #12  
LannyL81's Avatar
LannyL81
Melting Slicks
20 Year Member
Conversation Starter
 
Joined: Nov 2005
Posts: 3,323
Likes: 142
From: Green Valley Arizona
Default
Simple...the car did not like being in storage....
Reply
0

Get notified of new replies

To C5 headlights

Back to Subforum
C5 General
View Next Unread
Johnny O'Connell Shocks at CCA




Click for Advanced Search
Reply Closed Thread Share
Forum Jump
Trending Topics

All times are GMT -4. The time now is 01:36 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
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-8
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-9
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