Transmission Issue: Unable to Detect Gear Location Fig 1: Symptom of Gear status unknown Symptoms: Gear status unknown (as in the picture above: Fig 1) When attempting to reset, the car can move, but in "Drive" mode, it only operates in limp mode. Unable to shift gears to "Reverse" (R) or "Park" (P), only to "Neutral" (N). Observed Behavior: Limp mode activated. Gear status not detected. In "Drive" (D) mode, the car moves but only in limp mode. Gear cannot be shifted to "Reverse" or "Park." Troubleshooting and Rectification Steps Initial Steps: Perform a gearbox reset. If the problem persists, proceed to the next steps. Verify the last gearbox service. If it is still within the recommended service interval, follow these solutions: Solution 1: TCU Check and Cleaning Remove the Transmission Control Unit (TCU) and inspect it. Heat the TCU board (the electrical board inside Fig 2) in an oven at 200°C for 6-8 minutes to ...
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