Land Rover LR3 ZF6HP26 no start after overhaul - Transmission Digest

Land Rover LR3 ZF6HP26 no start after overhaul

The complaint

A 2006 Land Rover LR3 equipped with the ZF6HP26 transmission has a post-overhaul complaint of a no-start condition. Part of the transmission overhaul process included the replacement of the mechatronic unit.

The cause

The mechatronic unit that was purchased from a parts distributor and installed was for a Ford 6R60 transmission (figure 7) which did not contain a Transmission Control Module. The Land Rover requires a mechatronic unit that contains a TCM.

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Figure 1.

The correction

Once the mechatronic unit with a TCM was installed and programmed (figure 2, at the top of the page), the Land Rover started and performed normally.

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