Delayed Drive Engagement on AF335 - keywords cold engage garage hot M45 M09 shift TCM warm

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Vehicle may exhibit a delayed engagement into drive at any temperature.

Dealer will need to swap a TCM from a known good vehicle and retest. If this is too inconvenient then dealer will need to replace TCM.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.