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Will flashing my ecu void my warranty????

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Old 02-18-2011, 03:24 PM
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2011 e 350,clk 550
Will flashing my ecu void my warranty????
Hey i have a new e 350 sedan and i was thinking about flashing the ecu. but i was worried to was going to void my warranty and its a lease can i give the car back like that or do i have to re flash it back to factory settings when i give it back??? if anyone know and could help me out i would appreciate it!
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Old 02-18-2011, 03:31 PM
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Originally Posted by natef50
Hey i have a new e 350 sedan and i was thinking about flashing the ecu. but i was worried to was going to void my warranty and its a lease can i give the car back like that or do i have to re flash it back to factory settings when i give it back??? if anyone know and could help me out i would appreciate it!
when you return a lease that car goes straight to car auction =D
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Old 02-18-2011, 03:41 PM
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2011 e 350,clk 550
so i dont have to set it back to factory?
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Old 02-18-2011, 08:21 PM
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Originally Posted by Badblackfolife
when you return a lease that car goes straight to car auction =D
Not true. The rejects go to the auction, and the ones deemed worthy (by the Dealer) to remain on the lot, get CPO'd and put for sale.

To O/P, yes, I'd put it back to stock. If they find out, they'll surely give you guff.
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Old 02-18-2011, 11:13 PM
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well said
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Old 02-21-2011, 10:17 PM
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'10 MB E350, '07 Lotus Exige S, '10 Chevy Tahoe
No, it will not void your warranty. The dealer can void coverage of certain part of the engine/drivetrain if they can prove that the reflash caused damage to the engine or certain components (ex: removing a rev limiter caused premature cam wear which lead to premature engine failure).

For more info Google Magnuson-Moss Warranty Act
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Old 02-22-2011, 12:06 PM
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Whats the point of flashing the ECU on a E350 lease. Sounds like a complete waste of $$ for maybe 10whp. But to answer the question it will not void the warranty.
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