Lazy tach fixed by replacing battery
11-16-2004, 02:12 PM
#1
AudiWorld Member
Thread Starter
Join Date: Jul 2002
Posts: 381
Likes: 0
Received 0 Likes
on
0 Posts
Lazy tach fixed by replacing battery
Symptom: tach stays at 0rpm for 1-2 seconds after starting car, then jumps to proper reading. Not every start, but probably once a week or so.
Cluster was replaced (for an different reason) and the lazy tach wasn't resolved. Recently got a 2nd cluster replacement, and while the dealership had my car, the battery died. It was probably due since the car is over 4.5yr old, so I replaced the battery (w/ non-Audi). Lazy tach hasn't come back for 2-3 months. Another post linked lazy tach to battery, so here's another vote...
Cluster was replaced (for an different reason) and the lazy tach wasn't resolved. Recently got a 2nd cluster replacement, and while the dealership had my car, the battery died. It was probably due since the car is over 4.5yr old, so I replaced the battery (w/ non-Audi). Lazy tach hasn't come back for 2-3 months. Another post linked lazy tach to battery, so here's another vote...
11-16-2004, 02:15 PM
#2
Member
Join Date: Aug 2001
Posts: 4,318
Likes: 0
Received 0 Likes
on
0 Posts
Interesting because that is pretty much the only IC-related issue I have...
My battery is original and the car was built 1/01. It hink I'll put it on the trickle charger and see how it responds after that.
11-16-2004, 02:56 PM
#3
AudiWorld Member
Thread Starter
Join Date: Jul 2002
Posts: 381
Likes: 0
Received 0 Likes
on
0 Posts
Re: Interesting because that is pretty much the only IC-related issue I have...
Wouldn't hurt to try trickle charging, but my battery was so dead charging it didn't help. Lazy tach first appeared about a year ago, so I'm glad the new battery took care of that too.
11-16-2004, 03:06 PM
#4
You're due too John...>>
Mine was built 11/00......Started seeing lower resting voltage numbers this past summer. Replaced before TT-East to avoid a meltdown (like NasTTcar went through)...
Trending Topics
11-16-2004, 03:52 PM
#10
Member
Join Date: Aug 2001
Posts: 4,318
Likes: 0
Received 0 Likes
on
0 Posts
Hmm...already put dealer on notice of cluster issue, so maybe I shouldn't turn down new one>>
even if it is the battery, on the assumption that they are so problematic mine would probably go anyway - and maybe after warranty.