Go Back   AudiWorld Forums > Audi Models > Audi A6 / S6 / RS 6 > A6 / S6 (C5 Platform) Discussion
Sign in using an external account
Register Forgot Password?


A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

Welcome to AudiWorld Forums!
Welcome to AudiWorld.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the AudiWorld Forums community today!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 07-04-2014, 08:43 AM   #1
Audiworld Junior Member
Account #: 284512
 
Join Date: Jun 2014
Posts: 28
Default Coolant warning light

I have put just over 1K on my Audi. Today on my way to work I heard a loud BEEP 3 times. My car was not overheating and through the torque program, my coolant temp was 99deg C yet my dummy light showed 59deg C. My coolant is just at the minimum level & it has always read right were it was at on the overflow bottle. I have searched and found that some have just needed to add a little coolant to fix the problem as the level was a tad low to start with. I'm concerned that I may be loosing coolant. Any thoughts? When I first purchased the audi, the car was overheating and the thermostat & overflow bottle were replaced. The car runs fantastic, but now I have this loud BEEP every so often.


My 2000 Audi A6 2.7t has a few simple codes. The combi valves are throwing codes and the Oxygen sensors, both R and L bank o2 sensor 1 are showing high resistance. I plan on replacing the o2 sensors and cleaning the combi valves soon.
Osmosis is offline   Reply With Quote
Old 07-04-2014, 09:00 AM   #2
AudiWorld Member
Account #: 245565
 
Join Date: Oct 2012
Posts: 109
Default

Quote:
Originally Posted by Osmosis View Post
I have put just over 1K on my Audi. Today on my way to work I heard a loud BEEP 3 times. My car was not overheating and through the torque program, my coolant temp was 99deg C yet my dummy light showed 59deg C. My coolant is just at the minimum level & it has always read right were it was at on the overflow bottle. I have searched and found that some have just needed to add a little coolant to fix the problem as the level was a tad low to start with. I'm concerned that I may be loosing coolant. Any thoughts? When I first purchased the audi, the car was overheating and the thermostat & overflow bottle were replaced. The car runs fantastic, but now I have this loud BEEP every so often.


My 2000 Audi A6 2.7t has a few simple codes. The combi valves are throwing codes and the Oxygen sensors, both R and L bank o2 sensor 1 are showing high resistance. I plan on replacing the o2 sensors and cleaning the combi valves soon.
Any visible leaks? Is there smoke or a sweet smell on startup?
thall6594 is offline   Reply With Quote
Old 07-04-2014, 09:24 AM   #3
Audiworld Junior Member
Account #: 284512
 
Join Date: Jun 2014
Posts: 28
Default

Quote:
Originally Posted by thall6594 View Post
Any visible leaks? Is there smoke or a sweet smell on startup?
Sorry, I forgot that info. No visible leaks but once in a while I do smell coolant but no visible leaks and the coolant level on the overflow tank has always been right at the minimum coolant level. I plan to add 6oz of cool and and keep an eye on it. I'm gonna look.for leaks next week....close inspection. I did look and found nothing.
Osmosis is offline   Reply With Quote
Old 07-04-2014, 10:09 AM   #4
AudiWorld Senior Member
Account #: 158737
 
Join Date: Feb 2009
Posts: 1,019
Default

Have you checked the connector at the bottom of the tank? If there is plenty of coolant in the reservoir, and you are getting that light, then it is a sensor issue. You may still have a leak, but the coolant has to get pretty low in my experience before that light comes on. I am assuming it is the FLASHING red coolant light.

The sensor is in the bottom of the reservoir. The plug could have come off. If it is on, it may be worth disconnecting it and peeling back the rubber boot and inspecting the wiring as closely as possible for any brakes. You can also take a paper clip or wire between the two connectors and see if the light goes away (it should be on once it is disconnected) and the car started.

If the wiring is fine, and you have coolant in the reservoir, your sensor is probably bad and it is time for a new reservoir.
jseklund is offline   Reply With Quote
Old 07-04-2014, 10:24 AM   #5
Audiworld Junior Member
Account #: 284512
 
Join Date: Jun 2014
Posts: 28
Default

The only warning light I got was the one in the information center in the center of the two large gauges (SPEED and RPM) where we get the yellow OK light. It displayed a yellow coolant overflow type picture and a loud BEEP. I just got some G12 coolant and put 6 oz in there so I'll be keeping an eye on things. My coolant level was exactly at the minimum level on the overflow bottle.

BTW, thank you for your help!
Osmosis is offline   Reply With Quote
Old 07-04-2014, 12:44 PM   #6
Audiworld Junior Member
Account #: 223410
 
Join Date: Oct 2011
Location: Florida
Posts: 54
Default

The wiring & the connector for the coolant level sensor, located at the bottom of the coolant reservoir, was brittle & cracked on my car. The connector was broken by prior owners & would periodically just fall off the sensor, triggering the low coolant warning. You can remove the 3 screws that support the reservoir, & unplug the connector below. No need to drain any coolant to do this. Check your connector & wires for cracking or missing pieces. Be gentle on the plastic connector when removing...don't want to break it. If you don't already know it, there are tricks to removing these connectors. Push connector on slightly 1st, then push on clip release & pull off.
__________________
CRuby
2000 Audi A6 2.7T Quattro 6 spd
CRuby is offline   Reply With Quote
Old 07-05-2014, 08:22 AM   #7
Audiworld Junior Member
Account #: 284512
 
Join Date: Jun 2014
Posts: 28
Default

Can I just pull the connector off to remedy the dinging? ,the coolant overflow and sensors replaced 2 months ago. I'm not loosing coolant, not overheating and no smells or any smoke out the exhaust
Osmosis is offline   Reply With Quote
Old 07-05-2014, 10:45 AM   #8
Audiworld Junior Member
Account #: 284512
 
Join Date: Jun 2014
Posts: 28
Default

Quote:
Originally Posted by jseklund View Post
Have you checked the connector at the bottom of the tank? If there is plenty of coolant in the reservoir, and you are getting that light, then it is a sensor issue. You may still have a leak, but the coolant has to get pretty low in my experience before that light comes on. I am assuming it is the FLASHING red coolant light.

The sensor is in the bottom of the reservoir. The plug could have come off. If it is on, it may be worth disconnecting it and peeling back the rubber boot and inspecting the wiring as closely as possible for any brakes. You can also take a paper clip or wire between the two connectors and see if the light goes away (it should be on once it is disconnected) and the car started.

If the wiring is fine, and you have coolant in the reservoir, your sensor is probably bad and it is time for a new reservoir.
I suspect it's a malfunction of the dummy light. I have no leaks or other symptoms. I added a little coolant just incase it was low...it was not

Not exactly sure what your saying here; You can also take a paper clip or wire between the two connectors and see if the light goes away (it should be on once it is disconnected) and the car started.

Put a wire/paper clip between the connector and where the connector attaches to? OR jump from one side of the connector to the other side of the connector?

Thank you
Osmosis is offline   Reply With Quote
Old 07-05-2014, 11:48 AM   #9
Audiworld Junior Member
Account #: 284512
 
Join Date: Jun 2014
Posts: 28
Default

OK, I just pulled the plug to the overflow tank and I put a test light to the connector.

With Key on Engine Off I have no power to either connection. Is there a fuse to this switch? Is so..Where???

Also, I busted the plastic tube that goes to the drivers side conbi valve What should I use to replace the frail plastic tubing that connects to the combi valve? My car is throwing the code that says the combi valve is not working anyway. I did a quick fix with some rubber hose and electrical tape so its sealed for now -

IS there any way I can get my car from Beeping

I also pulled the plug from the overflow tank. When I did that, the info center started to warn me that the car was overheating.
Then I jumped the plug with a wire. The overheating warning stopped, but I still had the yellow overflow tank warning light on. HOW do I rid myself of this BEEP???
Thanks again for the help

Last edited by Osmosis; 07-05-2014 at 01:16 PM.
Osmosis is offline   Reply With Quote
Old 07-05-2014, 02:12 PM   #10
Audiworld Junior Member
Account #: 284512
 
Join Date: Jun 2014
Posts: 28
Default

OK, jumping the plug with a wire keeps the yellow overflow warning light on, but the beep is STILL THERE, just not as frequent as before I pulled the plug and jumped the connector.

NOW, how do I troubble shoot this problem so it's gone?

Last edited by Osmosis; 07-05-2014 at 02:53 PM.
Osmosis is offline   Reply With Quote
Old 07-05-2014, 02:12 PM
AudiWorld
Audi R8




Paid Advertisement
 
 
 
Reply

Tags
17883, 27t, a6, audi, beep, light, warning, yellow


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 10:18 PM.


Copyright 2014 AudiWorld.com Audi Enthusiast Community