The missing letters are I, C and L
The Taxi sign needs the missing I, C and L letters for Alphabet. This sign appears after the 10g antenna repair, and the loose letters float around the sign's immediate area.
Repair the Taxi sign locally
- After fixing the antenna, approach the Taxi sign with missing letters.
- Search the area around the sign for the floating I, C and L pieces.
- Collect the letters and place each back in its correct position on the sign. Finishing Alphabet grants Thirst Drain Rate −5%.
Where to keep looking for the letters
- Do I need to leave the Taxi-sign area to find the letters?
- Keep the search around the sign: the missing letters are floating nearby. Collect the I, C and L pieces there and return them to the sign in the correct order.