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.
Battery Box, Power Functions 4 x 11 x 7 with Orange Switch and Dark Bluish Gray Covers [Complete Assembly] [New Version]Light Bluish GrayPart 16511Element 6368436 or 6257768×1
Control Unit, IR, Power Functions, with Dark Bluish Gray BottomLight Bluish GrayPart 58122Element 6225576 or 6074396×1
Motor, Large, Power Functions with Dark Bluish Gray BottomLight Bluish GrayPart 99499Element 6263044 or 6211504×2
Receiver Unit, IR, Power FunctionsLight Bluish GrayPart 58123aElement 6194861 or 6132634×1
Tiles Round and Curved
5 pieces
Tile Round 1 x 1 with Silver Circle PrintFlat SilverPart 98138pr0047Element 6322905 or 61389641 spare in the box×5
Tiles Special
5 pieces
Tile Special 1 x 2 Grille with Bottom GrooveDark AzurePart 2412bElement 6152109×1
Tile Special 1 x 2 Grille with Bottom GrooveLight Bluish GrayPart 2412bElement 4211350×2
Tile Special 1 x 2 Grille with Bottom GrooveOrangePart 2412bElement 4125254 or 3933106×1
Tile Special 1 x 2 Grille with Bottom GrooveRedPart 2412bElement 241221×1
Minifig Accessories
3 pieces
Equipment Fishing Rod 12L, Vertical Line HoleBlackPart 2614Element 6270122×1
Wheel 11 x 8 with Center GrooveLight Bluish GrayPart 42610Element 4211758×2
Stickers
1 piece
Sticker Sheet for Set 42095-1[No Color/Any Color]Part 46338Element 6249572×1
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.