Interesting observation wrt dying battery - "lazy" tachometer.
11-25-2003, 06:10 PM
#1
AudiWorld Senior Member
Thread Starter
Join Date: Nov 2001
Posts: 1,314
Likes: 0
Received 0 Likes
on
0 Posts
Interesting observation wrt dying battery - "lazy" tachometer.
About 4 to 6 weeks ago I noticed my tachometer would stay at zero for about 2 to 5 seconds after the car started. I was worried that the cluster was failing. Then in cold weather during a trip to Penn., my clock reset while starting the car. Yesterday we had cold weather in Texas and my car was noticeably weak starting and the clock reset again. The battery had a dead or dying cell. After replacing the battery today, my tachometer is no longer "lazy". It begins working as soon as the engine starts.
So it appears that this delay in the tachometer working is a probably early indicator of a low voltage situation related to a battery on it's last legs. Thought this might help others diagnose a battery issue before it dies completely.
So it appears that this delay in the tachometer working is a probably early indicator of a low voltage situation related to a battery on it's last legs. Thought this might help others diagnose a battery issue before it dies completely.
11-25-2003, 06:36 PM
#2
That's why I have this little $25 insurance policy...>
<center><img src="http://images2.fotki.com/v21/photos/7/7305/224186/DSCF0201-vi.jpg"></center><p>
It's a good diagnostic tool as are most gauges...<ul><li><a href="http://public.fotki.com/ttschwing/airfuel_and_voltmet/">A/F and matching volmeter for $45</a></li></ul>
It's a good diagnostic tool as are most gauges...<ul><li><a href="http://public.fotki.com/ttschwing/airfuel_and_voltmet/">A/F and matching volmeter for $45</a></li></ul>
11-25-2003, 06:49 PM
#3
Junior Member
Join Date: Sep 2001
Posts: 1,139
Likes: 0
Received 0 Likes
on
0 Posts
You can also view the warnings on the Temperature Display
C21 is the Number of low voltage occurrences, non-transient<ul><li><a href="https://www.audiworld.com/tech/int6.shtml">https://www.audiworld.com/tech/int6.shtml</a</li></ul>
11-25-2003, 07:24 PM
#7
Mine was $16.99
<img src="http://jbipes.home.comcast.net/jpgs/voltmeter.jpg">
Oh, I took it apart, of course, to fit my Euro Lower dash<ul><li><a href="http://www.cetsolar.com/voltmeter.htm">12 voltmeter</a></li></ul>
Oh, I took it apart, of course, to fit my Euro Lower dash<ul><li><a href="http://www.cetsolar.com/voltmeter.htm">12 voltmeter</a></li></ul>
Trending Topics
11-26-2003, 04:20 AM
#10
New Member
Join Date: May 2000
Posts: 263
Likes: 0
Received 0 Likes
on
0 Posts
It's good to know others have the same problem, my tach only acts up when the weather is cold too,
never crossed my mind that it could be the battery. TT is 3 1/2 years old with 46k, might need a new battery. I also get the temp warning for about 30 seconds on very cold mornings.
Thread
Thread Starter
Forum
Replies
Last Post
Asicks2.7T
A6 / S6 (C5 Platform) Discussion
5
02-01-2006 06:05 AM