Dead Battery ???
#1
Advanced
Thread Starter
Join Date: Jan 2005
Location: Tampa, FL
Posts: 85
Likes: 0
Received 0 Likes
on
0 Posts
Dead Battery ???
I have a 2 month old TL that won't go more than 10 days on a battery charge. I had to have it jumped twice since new. Although I don't drive it much it should go at least a month without going dead.
The dealer checked out the battery, said it was fine and just charged it. I don't think that they tested anything else. Does anyone know what the alternator output should be when running and what the drain should be when the motor is off (only the alarm and clock should be running, right)?
Thanks, Jim
The dealer checked out the battery, said it was fine and just charged it. I don't think that they tested anything else. Does anyone know what the alternator output should be when running and what the drain should be when the motor is off (only the alarm and clock should be running, right)?
Thanks, Jim
#2
Senior Moderator
my MDX (2006) has had the same problem, they have attempted 4 repairs and a final attempt before lemon law rules. They traced the problems to messed up relays and its been about 7 days now.
#3
Racer
Join Date: Jul 2006
Location: Phoenix...Greatest City on Earth
Age: 72
Posts: 362
Likes: 0
Received 1 Like
on
1 Post
Alternator puts out voltage AND amps. Both are important. It can have good voltage, but fail the amp test. To properly test a charging system takes the proper tools, a fully charged battery, and a tech who knows what to look for. I would recommend you take it back to a dealer who can do this right for you.
It sounds to me like you have a draw however. That can be a nightmare to track down. Again, that's why the dealer is there. Use him.
It sounds to me like you have a draw however. That can be a nightmare to track down. Again, that's why the dealer is there. Use him.
#4
I had the same problem on my '06. It was traced to the HFL unit which would not go into sleep mode. It was fully covered under warranty. The HFL unit costs $500 if not under warranty.
At first they told me they do not see any problem but when I told them I will not take back posession of the car since something is wrong and they need to find it, they went and did a full diagnostic and found the problem. It has been 6 months now and no battery drain problems at all.
At first they told me they do not see any problem but when I told them I will not take back posession of the car since something is wrong and they need to find it, they went and did a full diagnostic and found the problem. It has been 6 months now and no battery drain problems at all.
#6
Senior Moderator
Originally Posted by davenlei
I had the same problem on my '06. It was traced to the HFL unit which would not go into sleep mode. It was fully covered under warranty. The HFL unit costs $500 if not under warranty.
At first they told me they do not see any problem but when I told them I will not take back posession of the car since something is wrong and they need to find it, they went and did a full diagnostic and found the problem. It has been 6 months now and no battery drain problems at all.
At first they told me they do not see any problem but when I told them I will not take back posession of the car since something is wrong and they need to find it, they went and did a full diagnostic and found the problem. It has been 6 months now and no battery drain problems at all.
#7
Cruisin'
Join Date: Apr 2004
Location: Cheverly MD
Age: 80
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
The parasitic drain for the TL (mainly door alarm & clock) is 30 ma - it will read another 200 ma for the first 10 minutes after shut off until the HFL goes into its sleep mode.
30 ma is about 1/33 of an amp (30 thousanths). The stock battery has an amp hour capacity of 65. If we roughly assume that to crank the engine we need 2/3 battery capacity, we have about another 22 amp hours available to cover the parasitic drain over an inactive period in the garage. We should have 22 x 33 = 726 hours or 30 days available and still be able to start.
I've had 2 TL's (and 04 AT & 04 MT) and neither would start after 5-6 days in the garage. Finally traced the problem to the Delco green eye OEM battery - the dealer changed to the stock Acura replacement part battery (Acura label / no green eye). No problems since - I have left car for about 34 days in cold garage and had clean quick start.
I personally would not drive this car with the green eye battery - just my opinion.
30 ma is about 1/33 of an amp (30 thousanths). The stock battery has an amp hour capacity of 65. If we roughly assume that to crank the engine we need 2/3 battery capacity, we have about another 22 amp hours available to cover the parasitic drain over an inactive period in the garage. We should have 22 x 33 = 726 hours or 30 days available and still be able to start.
I've had 2 TL's (and 04 AT & 04 MT) and neither would start after 5-6 days in the garage. Finally traced the problem to the Delco green eye OEM battery - the dealer changed to the stock Acura replacement part battery (Acura label / no green eye). No problems since - I have left car for about 34 days in cold garage and had clean quick start.
I personally would not drive this car with the green eye battery - just my opinion.
Trending Topics
#9
Registered User
my battery just died yesterday, the car is less than 2 years old. you never know with batteries, sometimes they can last or 5+ years, and some die in under a year
#11
Air Vice Marshal
Originally Posted by mike03a3
Parked my new TL-S for five days. The battery was stone dead when I went to drive it this morning.
#12
Air Vice Marshal
[QUOTE=cdmontgomery]The stock battery has an amp hour capacity of 65. /QUOTE]
OK, so I parked my car around 7pm on a Friday and when I tried to start it around 7am the following Thursday the battery was stone cold dead. 0 volts.
That's 5 1/2 days, or 132 hours. If it is a 65 amp hour capacity, it would have to draw almost 500 milliamps to be dead that fast.
OK, so I parked my car around 7pm on a Friday and when I tried to start it around 7am the following Thursday the battery was stone cold dead. 0 volts.
That's 5 1/2 days, or 132 hours. If it is a 65 amp hour capacity, it would have to draw almost 500 milliamps to be dead that fast.
#13
Pro
Join Date: Mar 2006
Location: Delaware/Philly
Age: 47
Posts: 547
Likes: 0
Received 3 Likes
on
3 Posts
I think its time to tell Acura that you want a loaner and you don't want your car back untill it is fixed. It sounds like you definitly have a problem. Maybe if the car sits on their lot and goes dead they will see that there is a problem and fix it. Remeber, be nice but firm about the issue.
#14
Air Vice Marshal
[QUOTE=mike03a3]
This morning I started the TL-S up after it sat for 109 hours (4.5 days). Most of that time the temp never got above the 20s, it was 12F this moring. It fired right up, so it looks like it was just a bad battery from the factory.
Originally Posted by cdmontgomery
The stock battery has an amp hour capacity of 65. /QUOTE]
OK, so I parked my car around 7pm on a Friday and when I tried to start it around 7am the following Thursday the battery was stone cold dead. 0 volts.
That's 5 1/2 days, or 132 hours. If it is a 65 amp hour capacity, it would have to draw almost 500 milliamps to be dead that fast.
OK, so I parked my car around 7pm on a Friday and when I tried to start it around 7am the following Thursday the battery was stone cold dead. 0 volts.
That's 5 1/2 days, or 132 hours. If it is a 65 amp hour capacity, it would have to draw almost 500 milliamps to be dead that fast.
Thread
Thread Starter
Forum
Replies
Last Post
SidhuSaaB
3G TL Problems & Fixes
18
05-30-2020 12:40 AM
MetalGearTypeS
3G TL Audio, Bluetooth, Electronics & Navigation
6
08-29-2016 08:28 PM
kb1rl
2G RL Audio, Bluetooth, Electronics & Navigation
5
09-30-2015 10:17 AM