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Q: 2005 ml350 Hello do i have to disconnect the battery to change the tps? on 2005 Mercedes-Benz ML350

baught the car with this problem doesnt throttle as it should. by disconnecting the battery will have more problems? or is there a reset procedure? Car showed a po121 code among others it has issues im sure thank you Jim
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you may cause more damage than good repairing this yourself. if you have mulitiple codes seek diag and est. a code doesn't mean the part is bad its telling you the circuit has an issue
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