Quote:
Originally Posted by insane79
Hi,
I went to the dealer with my car key & he checked it on the key reader & toke a print out & said the car battery voltage is 13.8v, even i was surprised hwo he can check it without checking the battery in front of him  |
The key reader stores a bunch of diagnostic info, including the battery voltage as of last removal. I forget why, but there you go
.
For that matter, the car can check its own voltage, which you can read with an INPA cable. You can open the trunk and measure it with a multimeter, but then, hey, why bother.