Electrical system question
Thread Starter
Lexus Test Driver
Joined: Oct 2007
Posts: 975
Likes: 6
From: CA
Electrical system question
Hi all
I have a problem (I think) with my 09 Acura TSX (I know, wrong forum)
It's drained 2 batteries in the last 5 years to the point where I can't jumpstart the car
Using a multimeter, I am seeing 12.3V at the battery terminals (new battery 2 days old) when the car is off. WIth the car running (idle), I am seeing 14.3V. The car does 5 to 20 minutes drives usually
I cannot detect a parasitic electrical drain (maybe I am doing it wrong) -- any ideas?
Thanks
I have a problem (I think) with my 09 Acura TSX (I know, wrong forum)
It's drained 2 batteries in the last 5 years to the point where I can't jumpstart the car
Using a multimeter, I am seeing 12.3V at the battery terminals (new battery 2 days old) when the car is off. WIth the car running (idle), I am seeing 14.3V. The car does 5 to 20 minutes drives usually
I cannot detect a parasitic electrical drain (maybe I am doing it wrong) -- any ideas?
Thanks
Intermediate
Joined: Jan 2018
Posts: 424
Likes: 54
From: WI
To check for parasitic drain, you need to monitor the current (amps) draw on the battery with the ignition off. You measure current in series with the battery, not across the terminals (parallel) like voltage measurements. Set your DVM to the mA or A range, disconnect one side of the battery and put your meter in series.
Thread
Thread Starter
Forum
Replies
Last Post
