The problem only impacts VIN range CA423911-DA431347, MY12-13 and is a PCM update documented in Tech Bulletin LTB00448v5 published 05 APR 2013, so is hot off the press.
Probably more likely to impact new Def drivers as it is exaggerated by the fast shifting and heavy acceleration habits of some other vehicles. If you adopt a more John Deere driving style as befits the Defender it is less noticeable![]()


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