- Jul 6, 2014
- 9,267
This... This has been driving me crazy for the last couple years now... Basically let me outline this. The escalade has a random drain. Can't even call it parasitic... here is the most recent time it happened to me:
November, I was using the truck while mine was getting the body work done. I worked 06:00-18:00. I leave at 5:15 to head in, leave the compound at 18:50. I drive to work then leave to go to the boat for a bit. Leave the boat around 22:00 get home 22:40 and park the truck. Go to warm the truck up at 4:50 and it's so dead not a single light comes on, battery registers 5 volts.... Things that occurred prior: lift gate wouldn't open, radio locked up. (factory bose premium, non nav)
I probed every fuse in that truck for a month straight. Didn't die once, idle draw about 35 mA. Dad went to the boat, came home went to leave a couple hours later and it barely cranked... Still nothing, clamp meter on ground showing about half an amp draw... being it was just running that was modules still going to sleep. Later on 50 mA... I am at my whits end and am really thinking it is a BCM issue because I get a random loss of coms code which for whatever reason refers to the TAC module... which the truck tends to go into limp mode when being jumped when the battery is weak... I just really don't know what else to do other than keep it on a battery tender all the time but sometimes it still goes dead even on that... so whatever the draw is when it does happen is pretty large.
Just looking for input is all or a way to datalog current draw where I can catch it in the act without disconnecting crap...
Thanks,
-
-Paul
November, I was using the truck while mine was getting the body work done. I worked 06:00-18:00. I leave at 5:15 to head in, leave the compound at 18:50. I drive to work then leave to go to the boat for a bit. Leave the boat around 22:00 get home 22:40 and park the truck. Go to warm the truck up at 4:50 and it's so dead not a single light comes on, battery registers 5 volts.... Things that occurred prior: lift gate wouldn't open, radio locked up. (factory bose premium, non nav)
I probed every fuse in that truck for a month straight. Didn't die once, idle draw about 35 mA. Dad went to the boat, came home went to leave a couple hours later and it barely cranked... Still nothing, clamp meter on ground showing about half an amp draw... being it was just running that was modules still going to sleep. Later on 50 mA... I am at my whits end and am really thinking it is a BCM issue because I get a random loss of coms code which for whatever reason refers to the TAC module... which the truck tends to go into limp mode when being jumped when the battery is weak... I just really don't know what else to do other than keep it on a battery tender all the time but sometimes it still goes dead even on that... so whatever the draw is when it does happen is pretty large.
Just looking for input is all or a way to datalog current draw where I can catch it in the act without disconnecting crap...
Thanks,
-
-Paul