Free tool
Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.
Checking
23 pieces in 17 part and color combinations.
LEGO counts 22 pieces. This inventory comes from a separate parts catalog and lists 23; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
LEGO's request form asks for the set number (3589) and each piece's element ID, both listed above.
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Duplo Figure, Early, Aviator Hat Blue with Silver Visor, Dark Gray Legs, Dark Gray Jumpsuit, Blue Arms Print (Action Wheeler)
×1
Duplo Toolo Arm 2 x 6 with Triangular Set Screw and Clip Ends
×1
Duplo Toolo Brick 2 x 2 with Angled Bracket with Forks and Two Screws, Holes at Side
×3
Duplo Toolo Brick 2 x 2 with Holes and Clip on Bottom
×3
Duplo Toolo Intelligent Brick Sound Key #2
×1
Duplo Toolo Cockpit 4 x 6
×1
Duplo Toolo Intelligent Brick / Base
×1
Duplo Toolo Wings with 2 x 4 Brick Center
×2
Duplo Fuel Container 1 x 2 x 2
×1
Duplo Toolo, Propeller, 3 Blades
×2
Duplo Winch Stand
×1
Duplo Toolo Sound Brick Type 1
×1
Duplo Toolo Tool Screwdriver
×1
Duplo Windscreen 4 x 4 x 2 Curved
×1
Duplo Toolo Intelligent Brick Sound Key #3
×1
Sticker Sheet for Sets 3586-1, 3587-1, 3588-1, 3589-1, 3590-1
×1
Tick each piece as you find it, or mark it missing.
LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.
Request a replacement from LEGOMark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.
Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.
