Crazy Malfunctions After Battery Change

[the.view.from.here]

YouTube

Found this video from Scotty Kilmer. You have to preserve something called the KEEP ALIVE MEMORY while swapping batteries. Good video. I’m about to try this myself on my ‘04 Ltd.

Things used in this video:
1. Power Supply Cable Memory Saver: http://amzn.to/2nxoD9e
2. 12V battery supply (Jump Start Pack): http://amzn.to/2GFDyH6
3. Disposable Gloves: http://amzn.to/2z4TygG
4. Common Sense

 

[Arob02]

Just wanting to bump this thread because I’m having an issue after recharging the battery.

While cleaning my 04 Limited yesterday I accidentally left the key on ACC and drained the battery. After charging the battery and cranking it up I noticed the 4lo light was blinking on the dash. VSC lights were also on.

I turned the vehicle off after several minutes and removed the key. When I turned the car back on the 4lo light still blinks but now it is also beeping.

When I actually put it in 4lo (when in neutral) the beeping stops and the light goes solid. When I put it back into 4hi the beeping and flashing starts again.

I have tried cycling through 4hi and 4lo several times and even drove around the block.

I reset the ECU by disconnecting the battery and checked the 4wd fuse in the dash.

I unplugged the 4wd ecu under the glove box also.

This just happened after jumping off the battery so it appears to only be an electrical issue.

I got the C1336 (Zero Point Calibration) code when I hooked it up to a code reader. Just finished doing the ZPC, fixed the VSC lights but now the code reader isn't showing anything else wrong even though the 4lo light still flashes and beeps when it's in AWD.

Any advice??

 

[the.view.from.here]

So following up on the original video I posted. I called the Toyota dealer and the service guy told me to just swap batteries while the vehicle's running. Saved me from having to buy or find the tools below. Ridiculously easy, total no-brainer.

YouTube

Found this video from Scotty Kilmer. You have to preserve something called the KEEP ALIVE MEMORY while swapping batteries. Good video. I’m about to try this myself on my ‘04 Ltd.

Things used in this video:
1. Power Supply Cable Memory Saver: Amazon.com: VSTM OBD II Vehicle ECU Emergency Power Supply Cable Memory Saver (3Meter) with Alligator Clip-On 12V Car Battery Cigarette Lighter Power Extension Socket: Automotive
2. 12V battery supply (Jump Start Pack): Amazon.com: NOCO Boost Plus GB40 1000 Amp 12-Volt UltraSafe Portable Lithium Car Battery Jump Starter Pack For Up To 6-Liter Gasoline And 3-Liter Diesel Engines: Automotive
3. Disposable Gloves: Microflex SG-375 Disposable Latex Gloves Medical / Exam Grade, Long Cuff, Thick Powder Free Glove in Natural Rubber for Cleaning, Sanitary or Mechanic Tasks, Blue, Size Small, Box of 50 Units: Safe Grip Gloves: Amazon.com: Industrial & Scientific
4. Common Sense

 

[AuSeeker]

So following up on the original video I posted. I called the Toyota dealer and the service guy told me to just swap batteries while the vehicle's running. Saved me from having to buy or find the tools below. Ridiculously easy, total no-brainer.

Do some research...but it's not advisable to disconnect the battery in a modern vehicle loaded with computers and electronics, it "can" cause major issues with those computers and electronics!!

I'm shock a service "guy" if he had any amount of experience would tell you it's OK to do that!

I have been doing mechanic work for over 50 years and back before the computers and electronics controlling everything it was perfectly fine to disconnect the battery to test that the generator/alternator was charging it was a common and accepted diagnosis, but once the computers and electronics came into play most if not all vehicle manufacturers warned not to do that because of the damage it can do to the computer and electronics and most of them say it would void the warranty on those items!!

 

[the.view.from.here]

Do some research...but it's not advisable to disconnect the battery in a modern vehicle loaded with computers and electronics, it "can" cause major issues with those computers and electronics!!

I'm shock a service "guy" if he had any amount of experience would tell you it's OK to do that!

I have been doing mechanic work for over 50 years and back before the computers and electronics controlling everything it was perfectly fine to disconnect the battery to test that the generator/alternator was charging it was a common and accepted diagnosis, but once the computers and electronics came into play most if not all vehicle manufacturers warned not to do that because of the damage it can do to the computer and electronics and most of them say it would void the warranty on those items!!

Thanks for the heads up. I didn't have any problems after the swap, but I understand what you're saying and I guess I won't be doing it that way again then.

 

[Grapejuicepapii]

Weird intermittent battery light issue

Hey everyone hope someone can help point me in the right direction here

So I’ve replaced my battery with an odessey battery
As of 4 months ago and also installed a new connector for the alternator because one of the wires coming out of it where grounded since then everything’s been fine until recently the battery light came on and I checked the terminals and the negative was very loose so I tightened it and next drive the light went away until 20 mins In it came back then it went away after some time

I checked charge on battery and it’s 14.0 when car is on

Also when my battery light comes on I turned all my lights and radio on and noticed no dip in voltage (light flickering slow window, none of that everything works fine)

So I’m trying to trouble shoot but most times I pull it into my driveway when I shift it to park the battery light goes away again with no cause or weird noise or smell and nothings loose

Has someone expirenced this, or could it be my connections for the whip going to the alternator?

I have a 2000 SR5 4Runner

 

[Izo403]

First I would check your connections on the battery to make sure their nice and tight, the radio freaking out sounds more like a bad ground than anything (this is a factory radio head unit right?)

The fuel mileage indicator will fluctuate for a while as you've erased the learned values on the "optimism meter" (as many of us refer to it as it is typically inaccurate), so I wouldn't worry to much about that, it will level out to what ever it thinks the average fuel economy the more you drive it.

You also need to reinitialize the automatic function of the driver's window and rear window after you disconnect the battery. To do this simply roll the window up and down 3 times in a row without stopping (going all the way down and up), this relearns the jam protection feature and lets the "Auto" function on both the Driver's Front Window and Rear Hatch Window to function correctly.

You may also have the VSC & ABS warning lights come on, this is because on the '03 & '04 models the Zero Point Calibration (ZPC) data becomes erased when the voltage drops too low (usually below 12.0volts or when you disconnect the battery); you will need to perform a ZPC relearn to correct the issue (there's some write-ups on the forum for it.)

Did you by any chance relearn the idle after you disconnected the battery? Usually Toyota vehicles run a bit rougher and shift a little worse after having the battery disconnected for a bit; the reason is that the learned memory in the ECM is erased and the vehicle needs to relearn your driving habits. After you disconnect the battery for about 5-10 minutes you want to let the vehicle idle with no loads (no radio, no A/C, no lights, ect.) for a good 5-10 minutes to let it get its bearings; after which driving it like you normally do for a while will let it relearn your driving habits.

Nice

 

[Izo403]

Or you could use one of those little back-up battery packs that plugs into your cig lighter while the battery is disconnected to prevent all that.

Nice

 

[Izo403]

Nice

 

[Izo403]

Again, in case someone comes across this thread and wants to know the answer.

For my 04, the battery is at the front, driver's side of the engine bay. Loosen the nuts holding on the negative and then positive battery cables and then remove the cables. The battery is held in place by a cross bar and two vertical bars with nuts at the top of the battery. Undo those nuts and rotate the vertical bars so that the "hook" at the bottom comes out and you can take the "holder" off as one piece. It's really easy and shouldn't take long at all.

Nice

 

[Izo403]

Nice nice

 

[the.view.from.here]

Do some research...but it's not advisable to disconnect the battery in a modern vehicle loaded with computers and electronics, it "can" cause major issues with those computers and electronics!!

I'm shock a service "guy" if he had any amount of experience would tell you it's OK to do that!

I have been doing mechanic work for over 50 years and back before the computers and electronics controlling everything it was perfectly fine to disconnect the battery to test that the generator/alternator was charging it was a common and accepted diagnosis, but once the computers and electronics came into play most if not all vehicle manufacturers warned not to do that because of the damage it can do to the computer and electronics and most of them say it would void the warranty on those items!!

QUICK UPDATE

So I went ahead and swapped out batteries this way a couple months ago (crossing my fingers the whole time), but everything turned out just fine.

(IMPORTANT: I think this only works if your alternator's working correctly.)

I went to the dealership today and finally bought a new battery to replace the temporary one I've been using and wanted to get a second, second opinion from the dealership about swapping out the battery while the vehicle's running. I called the dealership before I went to ask another person's opinion on this and got the service manager on the line. He confirmed what they'd told me before: it's perfectly ok to swap batteries while the vehicle's running and he told me that's how their mechanics always do it when they're replacing batteries. He said just as long as you keep the cables from grounding/touching the frame, etc, you'll be fine. So I'll be doing this tomorrow. I'm just going to find something rubber or plastic to cover the terminal ends while I change it out.

 

[the.view.from.here]

QUICK UPDATE

So I went ahead and swapped out batteries this way a couple months ago (crossing my fingers the whole time), but everything turned out just fine.

(IMPORTANT: I think this only works if your alternator's working correctly.)

I went to the dealership today and finally bought a new battery to replace the temporary one I've been using and wanted to get a second, second opinion from the dealership about swapping out the battery while the vehicle's running. I called the dealership before I went to ask another person's opinion on this and got the service manager on the line. He confirmed what they'd told me before: it's perfectly ok to swap batteries while the vehicle's running and he told me that's how their mechanics always do it when they're replacing batteries. He said just as long as you keep the cables from grounding/touching the frame, etc, you'll be fine. So I'll be doing this tomorrow. I'm just going to find something rubber or plastic to cover the terminal ends while I change it out.

Started the vehicle, took the temporary battery out, kept the terminal ends from touching anything, put the new battery in, buttoned it all up, and everything is working just fine. No memory lost, nothing to reset. Good to go with a brand new battery.

 

[4RunnerAZPHX]

I got my batter changed and now the 4 runner will not go more than 20 mph.

I got my battery changed today and the guys at Jiffy Lube blew a fuse when they changed the battery. They replaced the fuse with a OEM fuse from the dealer, but now the car will not go more than 20 miles per hour. I disconnected the battery again and had it idle for 10 minutes and it still does not go more than 20 mph.

Any thoughts on what could have caused this? I do not trust the Jiffy Lube guys and now I have to tow this to a dealer as it does not go more than 20 mph. I don't fully trust the dealer so I would like to get more info on this first.

 

[Jnoble1377]

2005 4runner climate control issue

Nice

Hello, I replaced my battery now I cannot use the blower speed controls for fan speed. Almost seems like the climate control is in auto mode, but I cannot disengage auto mode by changing fan speed.

All other buttons work fine. Even the Off button does not work to shut off the air. When I turn temperature up the fan speed increases, and when I turn temperature down it decreases. Just can’t control fan speed manually. Lights do work and change when temperature button is regulating the speed. Any suggestions?

 

[zeusky]

Apologies for replying to an old post. Just had the water pump changed on my 2004 v6, 196k, 4WD.I appreciate removed the battery for the duration of the job. Now my idle is at 2000 in P, hard shifting, friggin ac is not blowing cold air!!!! This is insane based on what the earlier solution on the thread state.

Any additional tried and tested solutions?