Has anybody disconnected their battery? The owners manual says if you do you'll have to have the MDS reset by the dealer. I disconnected mine but I haven't noticed any difference in gas mileage on the freeway or in response to throttle. I called one dealer who said it would be $50.00, another didn't know what the hell I was talking about but said "If that's what it said in the manual I guess so and would be $87.00". Anybody have any exprience with this? I can't believe everytime you disconnect the battery you have to take it to the dealer!
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The Great Zombie Show And Spook Party
2006 Inferno Red Magnum
As far as I know there are only two things you need to do after disconnecting the battery. Reset the steering wheel sensor; start the car and turn the steering wheel all the way left and right. Run the drivers window all the way down and up to reset the automatic run down. I've disconnected mine and didn't even lose the radio presets. What page is the instruction to take it to the dealer?
Sorry, I've got an 05 and disconnecting the battery isn't mentioned in the manual. Hard to just ignore what's in the manual but if you don't have any issues and the dealer can't give you an adequate explanation for why a service visit is required I wouldn't do it. Any recalibration of engine or car controls will occur during operation. I read three forums regularly and have never seen a problem that needed a dealer visit to correct after a battery disconnect. Just my 2 cents.
Not one mention of MDS in my manual. I have read a procedure on the forums to reset the MDS system, as I recall it involved driving up to a certain speed and crusing there for some time and then stopping and restarting the car. It was dismissed in the thread as unneccessary and I would agree. The computer is adaptive and would adjust to set any paramaters neccessay for proper operation over time. It's not like the computer will lose it's program because the battery was disconnected. Just keep driving, any problems like poor fuel mileage should become apparent shortly and you can take it in with a specific complaint. I think the lack of specific knowledge for this from the dealer points to how little importance it really is. Call a few more dealers and see if any have a real knowledge of why a service visit is neccessay, may set your mind at ease.
i have disconnected my battery a few times on my '06 magnum. i had to reset the auto up/down windows, radio, esp, but never anything with the MDS. it still works just fine with no reset. i can hear it turn on and off as it should.
65standard has left the buiding
Calibrate gas pedal; turn key to on, wait for dash lights to go out, press pedal to the floor, release, turn car off, restart car and drive. Never read that this is a procedure from Dodge or a technical explanation of how this affects performance. Some people report a more responsive car, others no change. I've done it and have not noticed any difference. May have something to do with learning curve of computer. I think aggresive driving would accomplish the same thing.
The OBD II system (onboard diagnostic system) monitors the performance of the emissions, engine and automatic transmission control systems. The OBD II system will reset itself under normal driving after you disconnect the battery. There is a test you can complete to see if you OBD II system has reset after the battery has been disconected. If you have a 2005 Magnum please refer to pages 278, 279 and 280 of your manual. The manual gives a good explaination of the system and how to complete the test. I disconnected my battery to install a CAI and JET chip. I Performed the diagnostic test after I installed the negative battery terminal and the computer failed the test. I then drove the car to and from work the next day, which is 70 miles. I then tested the system and it passed(meaning the OBD II has reset itself for optimum performance). I figure Diamler wouldn't engineer a vehicle that would need a service dept. to update the computer system everytime the consumer diconnected the battery (This would be too much of a inconvinence). I am not a mechanic or technician but i've owned many BMW's and they were never sensitive to a simple battery disconnect. In my opinion Diamler Chrysler has started to engineer some of the best cars, trucks and suv's available. They are indeed going to please all the gearheads like myself and others, young and old when they release the Challenger. It will the rebirth of the muscle car era! It would be great if Diamler Chrystler would release some of the other muscle cars from the 60's and 70's. SEE YA!
I installed the OEM trailer wiring harness and disconnected the battery. After reconnecting, all i had to do was reset my 6CD radio presets and the clock. All the other selections in my convenience group and other equipment remained the same as before.
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1966 Custom Dodge Coronet
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