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.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Look-alike colors in this set
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color,
check whether it went in where the other color belongs. Each color has its own element ID in the parts list
at the back of the instructions.
Technic Beam 1 x 11 ThickBlack ×7Dark Blue ×2Black is yellower and darker than Dark Blue.
Technic Beam 1 x 7 ThickBlack ×4Dark Blue ×4Black is yellower and darker than Dark Blue.
Technic Beam 2 x 3 L-Shape with Quarter Ellipse ThickBlack ×2Dark Blue ×8Black is yellower and darker than Dark Blue.
Technic Beam 2 x 4 L-Shape ThickBlack ×4Dark Blue ×2Black is yellower and darker than Dark Blue.
Technic Beam 2 x 5 L-Shape with Quarter Ellipse ThickBlack ×6Dark Blue ×2Black is yellower and darker than Dark Blue.
Technic Panel Fairing #21 5L Small Smooth, Side BBlack ×2Dark Blue ×2Black is yellower and darker than Dark Blue.
10 more look-alike pairs
Technic Panel Fairing #22 5L Small Smooth, Side ABlack ×2Dark Blue ×2Black is yellower and darker than Dark Blue.
Technic Pin Connector Hub with 1 AxleBlack ×2Dark Blue ×4Black is yellower and darker than Dark Blue.
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge]Black ×2Dark Blue ×12Black is yellower and darker than Dark Blue.
Technic Pin Connector Hub with 2 Perpendicular AxlesBlack ×4Dark Blue ×8Black is yellower and darker than Dark Blue.
Tile 1 x 4 with GrooveBlack ×1Dark Blue ×2Black is yellower and darker than Dark Blue.
Tile 1 x 6 with GrooveBlack ×4Dark Blue ×2Black is yellower and darker than Dark Blue.
Technic Beam 1 x 5 ThickBlack ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic Beam 2 x 4 L-Shape ThickBlack ×4Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Technic Pin Connector Hub with 2 AxlesBlack ×6Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Technic Pin Connector Round 1L [Beam]Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Technic Beam 1 x 11 ThickMagentaPart 32525Element 6261634×4
Dark Tan
3 pieces
Technic Axle 4.5 with StopDark TanPart 7784Element 6569661×3
Medium Azure
3 pieces
Plate 1 x 3Medium AzurePart 3623Element 6119107 or 6013829×3
Orange
3 pieces
Technic Beam 1 x 2 with Axle on SideOrangePart 7244Element 6540720×2
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole]OrangePart 65304Element 6347790×1
[No Color/Any Color]
2 pieces
Sticker Sheet 1 for Set 42236-1[No Color/Any Color]Part 10115274Element 6580551×1
Sticker Sheet 2 for Set 42236-1[No Color/Any Color]Part 10115413Element 6581560×1
Dark Purple
1 piece
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge]Dark PurplePart 65487Element 6461475×1
Flat Silver
1 piece
Tile Round 1 x 1 with Soda Can Tab, Ring Pull PrintFlat SilverPart 98138pr0035Element 6322904 or 6117400×1
Tick each piece as you find it, or mark it missing.
When a piece really is missing
Ask LEGO
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.
Mark 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.
Keep a record
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.