Is there a need to go back to a stock tune for a battery replacement? My assumption would be that I don't have to but no harm in asking I guess. My battery showed me a slower than usual crank after the car sat unused for 2 days. I figure I won't get another nice unpainful warning so I will take it in to my dealership and have a new heavy duty installed first thing in the AM.
Back to stock?
- Thread starter Larrylu
- Start date
bpd1151
Active member
You wouldn't normally return to the stock file, just for a mere battery replacement, however, since you stipulate your intent on bringing the car to the dealer to do so, you should consider it, just to be safe.
Why? Because IIRC, Dealer Service Dept.'s routinely check/perform other updates to the ECM as a matter of routine practice.
So better to be safe, than sorry.
Sent from my DROID RAZR HD using Tapatalk
Why? Because IIRC, Dealer Service Dept.'s routinely check/perform other updates to the ECM as a matter of routine practice.
So better to be safe, than sorry.
Sent from my DROID RAZR HD using Tapatalk
Should be fine, unless you're afraid they'll scan for the tune and act on it as far as your warranty or wreck your tune with an update.... They can tell even if you go to stock by counting the number of flashes and comparing it against service records.
You can probably do better on battery prices with free install if you do it yourself.
You can probably do better on battery prices with free install if you do it yourself.
D
DJE624
Guest
I would never go to the dealer with out returning to stock. Like BPD said, they may update your ECU without telling you. Then, your screwed.
Thanks all. My dealer knows I'm running a tune so I can tell them not to flash an update. For some reason I was worried that the battery disconnect might cause a problem but my instinct was that it would retain whatever tune was loaded when the battery was disconnected. Sounds like that's what everybody is telling me. I went in a month ago to have this battery replaced and they tested it and told me it was fine for now, and to hold off the replacement. Reluctantly I followed the advice, but I've been watching real close. Now I have the age, the light on top going red, and now my last warning a noticeably slower crank from usual. No more waiting....new battery tomorrow morning!
D
DJE624
Guest
YAY!
I was poking through Forscan and there is a battery replacement recalibration to run when the battery is replaced (at least on my 13). There are current clamps on the battery cables but I have no idea what kind of logging is being done that the car would next to know when a new battery is installed.
Without using an "ecu saver" you'll probably lose the learned values like fuel trim, shifting, and idle control along with other stuff I'm sure I'm forgetting. But if you're flashing back to stock that would go away anyway.
Without using an "ecu saver" you'll probably lose the learned values like fuel trim, shifting, and idle control along with other stuff I'm sure I'm forgetting. But if you're flashing back to stock that would go away anyway.
D
DJE624
Guest
That doesn't sound very good.
That's cool, where did you pick that up? Won't mind having one, even though my dealer is aware of the tune and I always remind them not to flash without warning me so I can put the stock settings back in, but so far I haven't had to return mine to stock.BiGMaC said:You could put one of these in the OBD2 port for future worries at a dealer who knows you have a tune.
mj.....
There's one on eBay: http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0.Xdo+not+flash+obd2&_nkw=do+not+flash+obd2&_sacat=0&_from=R40
or Amazon (cheaper):
http://www.amazon.com/Daystar-KU71124BK-Flash-OBDII-Plug/dp/B00ASKRKQY
or Daystar (cheapest and available in black or red... . It does a one click online price match)
http://www.jegs.com/p/Daystar/Daystar-Do-Not-Flash-OBDII-Plugs/2860350/10002/-1
or just Google "do not flash obd2" or go to Daystar and search for an auto supply in your area bu zip code that carries them
There's one on eBay: http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0.Xdo+not+flash+obd2&_nkw=do+not+flash+obd2&_sacat=0&_from=R40
or Amazon (cheaper):
http://www.amazon.com/Daystar-KU71124BK-Flash-OBDII-Plug/dp/B00ASKRKQY
or Daystar (cheapest and available in black or red... . It does a one click online price match)
http://www.jegs.com/p/Daystar/Daystar-Do-Not-Flash-OBDII-Plugs/2860350/10002/-1
or just Google "do not flash obd2" or go to Daystar and search for an auto supply in your area bu zip code that carries them
D
DJE624
Guest
Hey Larry! All set with the new battery?
DJE624 said:
Yes Dave I'm all set. I had the dealer put in an 850 amp in place of the stock one. I decided not flash back to stock and reminded the service manager of my tune. No problem whatsoever. My dealer has never busted on me for my tune. Now if I blew the engine.....that would be a whole new story I'm sure. Just barely got it done before the dealer shut down for Xmas eve. Next day was family all day then this morning we flew out of Albany headed to Orlando and Disney for a week. 81 degrees down here today and 20 degrees in NY when I left. I'm sure if I left the car parked in my garage for a week by the time I got back home the battery would have been dead.
D
DJE624
Guest
Glad you got in there in time and got set. Try not to have too much fun without me! ;D