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If jump starting Model Y using another vehicle, refer to that vehicle
manufacturer's instructions. The following instructions assume you are using an
external low voltage power supply (such as a portable jump starter).
To determine whether your vehicle is equipped with a Lead-Acid or Lithium-Ion
Speed Assist may not be fully functional or may provide
inaccurate information in these situations:
Visibility is poor and speed limit signs are not clearly
visible (due to heavy rain, snow, fog, etc.).
Bright light (such as from oncoming headlights or
direct sunlight) is interfering with th