replacing the battery
Thread Starter
Intermediate
Joined: Mar 2018
Posts: 29
Likes: 1
replacing the battery
i think my car battery is dying. after leaving my house, i drive for a short trip, turn off my car and I'm stranded. this is the 3rd time it's happened and I'm currently waiting for roadside assistance for a jump. i bought a deltran battery tender to charge my battery last night and it says it's full but today my car won't start again after my short trip.
i want to try and buy a battery and replace it myself but have anyone tried replacing their own battery? can you just swap the battery like any other car? or i need to bring it to the dealer? and which battery should i get?
i want to try and buy a battery and replace it myself but have anyone tried replacing their own battery? can you just swap the battery like any other car? or i need to bring it to the dealer? and which battery should i get?
Burning Brakes
Joined: Oct 2005
Posts: 995
Likes: 215
From: Bend, Or.
Haven't done it myself, but found some info
http://www.insanegarage.com/panamera...-reset-limits/
reply to a question in the video - so it is somewhat involved
http://www.insanegarage.com/panamera...-reset-limits/
"Yes, although I didn't have problems and didn't have to reset anything. However, it may be different for you. ---DME control module – With the DME module, it is necessary to carry out a learning and adaptation routine as described below: Switch ignition on for 30 seconds without starting the engine. Do not actuate accelerator pedal. This completes the adaptation of the throttle valve adjusting unit. --Tire pressure monitoring system – When the battery is disconnected and connected, the tyre pressure is first displayed as “ – – “. Once the battery has been disconnected and work is complete, the vehicle must be driven for a short distance. The actual pressures will then be displayed again. ---Steering angle sensor – The steering angle sensor must be re-initialized when the battery is disconnected and connected. Turn wheels to straight-ahead position. Switch ignition off and then on again twice. Start engine. From the straight-ahead position, turn steering wheel approx. 20° to the right, past the straight-ahead position. Drive the vehicle straight ahead for at least one second at a speed above 4 km/h (2.5 mph). The steering angle sensor segment is recognised again in this process. Once the sensor has been successfully initialised, the fault code that is stored in the fault memory is documented using the fault deletion counter. The fault memory erases itself automatically. The PSM indicator light in the instrument cluster goes out. ---Motor for sunroof – The limit positions of the sunroof are deleted from the control unit when the battery is disconnected and connected. Switch on ignition. Press the sunroof button for several seconds in direction of travel. After approx. 10 seconds, the sunroof performs an automatic standardisation process and resets all positions. Keep the button pressed during the standardisation process. Afterwards, the sunroof is standardised correctly. ---Power windows – The limit positions of the power windows are deleted from the control unit when the battery is disconnected and connected. Perform the following procedure for all power windows: Pull rocker switch and fully close window once. Pull rocker switch once more. The upper end position of the window is stored. Press rocker switch and fully open window once. Press rocker switch once more. The lower end position of the window is stored. ---Electrical steering column adjustment (ELVS) – The electrical steering column adjustment end positions (ELVS) are deleted when the battery is disconnected and connected. The following buttons must be pressed in sequence in order to re-initialise electrical steering column adjustment. Press the extend button three times (extend towards the driver). Press the retract button once. Press the extend button once (towards the driver). Press the up button once. Press the down button once. Once the buttons have been pressed correctly, the steering column automatically moves all axles and stops at the center position (only works when the vehicle is stationary).
Burning Brakes
Joined: Oct 2005
Posts: 995
Likes: 215
From: Bend, Or.
some more info, has some work arounds for the loosing memory issue
https://www.aa1car.com/library/batte...t_problems.htm
https://www.aa1car.com/library/batte...t_problems.htm
Pro
Joined: Feb 2016
Posts: 615
Likes: 125
From: SF Bay Area
^^. thats nuts. attach your battery charger to the - and+ cables. disconnect the battery while leaving on battery tender to cables. remove and replace with new battery. reconnect cables to new battery. remove battery tender and thats it. you shoudnt loose anything.
Thread Starter
Intermediate
Joined: Mar 2018
Posts: 29
Likes: 1
can i connect the battery tender to the front of the car? or will it not work because i am disconnecting the battery? connecting the battery tender directly to the battery cable seems kind of dangerous to me while trying to disconnect it from the battery at the same time.
Pro
Joined: Feb 2016
Posts: 615
Likes: 125
From: SF Bay Area
ok. if you have a CTEK maintainer mdl 7002, it has a mode that says Supply. that will maintain power to electronic while batter is out. if you dont and on the denxe just get, on amazon or ebay, one of these little beauties9v battery and plug into cigarette socket.ugh. pic wont load. its just a plug in for cigarette socket on one end and the other end connects to a 9 v battery. cigarette ligher socket with 9 v battery to maintain power to car when changing battery
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Rennlist Member
Joined: Aug 2017
Posts: 3,337
Likes: 1,190
From: 91North/75South
RX7 no I dont think its dangerous at all as you will be keeping the 12v going to all the important functions and it wont notice the battery has been removed. Once you put the battery back in disconnect the tender and all should be fine. Before you get a battery I would load test the one you have, could be alternator and your battery is getting depleted by the car running off it instead of the alternator
Last edited by B Russ; Sep 19, 2018 at 05:00 PM.
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Thread Starter
Intermediate
Joined: Mar 2018
Posts: 29
Likes: 1
hmmm i think dogwood might be right. my deltran battery tender will stop charging if no battery is detected. which battery saver will work on the pananera? i understand the cigarette port needs to continuously supply power even when the car is off and I dont think our car has that.
also if it was the alternator, i would assume the car would die while driving.
also if it was the alternator, i would assume the car would die while driving.
Instructor
Joined: Mar 2006
Posts: 212
Likes: 2
I've changed the battery in my 970 4S, the first time it was replaced under warranty and I don't know the conditions, the second time I did it myself using a Sear Diehard and one of those 12v instant start battery packs connected to the under the hood jumper positions. I've also replaced batteries in a VW Touareg using the 9v battery technique successfully. In all cases, the software didn't lose data. I understand that the Pany software modifies the charging condition depending on the batteries age, but I haven't noticed any issues and the current battery is now 6yrs old.
Rennlist Member
Joined: Aug 2017
Posts: 3,337
Likes: 1,190
From: 91North/75South
I was going to mention one of those jump packs, but even with a tender there are so many things requiring voltage the battery not being there would not stop it from working. Best bet would be a jump box attached to the posts under the hood
Thread Starter
Intermediate
Joined: Mar 2018
Posts: 29
Likes: 1
picked up an interstate MTX 49 H8 today for $240+tax. i do have a jumper pack so i guess i will try connecting that to the front. Will maybe try replacing it tomorrow if i have time and the correct tools. i might not have tools for that reverse torx screw mentioned in that video :\
Thread Starter
Intermediate
Joined: Mar 2018
Posts: 29
Likes: 1
i was able to successfully replace the battery without having to reset anything. I put a jumper pack on the front, and i want to note that i did NOT disconnect the dc to dc module that is on top of the battery. not sure if that has anything to do with having to reset the settings or anything but everything appears to be working fine. car starts up strong every time even after short trips. thanks everyone for their advice. I hope this thread will serve as useful information to those that needs to replace their own batteries in the future.