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FCC ID cross-reference

FCC ID CWTWB1U840

Fits Nissan (2012–2019)

CWTWB1U840 is the FCC ID printed on the label under the fob’s battery cover — on this code we verify fit for Nissan (2012–2019). 2 (1 genuine OEM, 1 aftermarket) replacements are published, all in stock.

See all 2 parts
  • Makes
    1
    Nissan
  • Models
    3
  • Model years
    2012–2019
  • Frequency
    315
    MHz
  • In stock
    2 / 2
    2 SKUs
Will it fit?

Vehicles verified for CWTWB1U840

Nissan

3 models
  • Leaf
  • Sentra
  • Versa

Model years 2012–2019.

Which part fits which model

Each listing for this code, with the models and years it is verified for.

Part numbers & specs

Cross-reference data for CWTWB1U840

Cross-references (original part numbers)

1

The original part numbers our CWTWB1U840 replacements match against. Tap a number to copy it.

Electronics

Frequency
315 MHz
Transponder chip
PCF7952A / HITAG 2 / 46 CHIP
Buttons
4
Key types
Smart Key
IC ID (Canada)
Visual guide

Four checks before you program

  1. 1

    FCC ID on the label

    The code on the customer's key must read exactly the same.

    This code
    CWTWB1U840
  2. 2

    Frequency

    A remote on the wrong frequency will never talk to the car, even if it looks identical.

    This code
    315 MHz
  3. 3

    Buttons & layout

    Match the button count and the button layout to the original key.

    This code
    4-button
  4. 4

    Transponder chip

    For push-to-start and keyed ignitions, the chip has to match the immobiliser.

    This code
    PCF7952A / HITAG 2 / 46 CHIP
Programming guaranteeIf it won't program on the listed vehicle, we refund it and pay the return freight.Terms
Order

Genuine OEM and aftermarket parts for CWTWB1U840

2 of 2 in stock
2012-2019 Nissan Sentra Versa / 4-Button Smart Key / PN: 285E3-3SG0D / FCC ID: CWTWB1U840 (OEM)
In stock
NissanSmart Key

2012-2019 Nissan Sentra Versa / 4-Button Smart Key / PN: 285E3-3SG0D / FCC ID: CWTWB1U840 (OEM)

FCC CWTWB1U840315MHz4-btn2012–2019
Members-only pricing
View details
2013-2019 Nissan Sentra Versa Leaf / 4-Button Smart Key / FCC ID: CWTWB1U840 / PN: 285E3-3SG0D (Aftermarket)
In stock
CKSSmart Key

2013-2019 Nissan Sentra Versa Leaf / 4-Button Smart Key / FCC ID: CWTWB1U840 / PN: 285E3-3SG0D (Aftermarket)

FCC CWTWB1U840315MHz4-btn2013–2019PCF7952A / HITAG 2 / 46 CHIP
Members-only pricing
View details
Quick answers

Quick answers — FCC ID CWTWB1U840

What vehicles use FCC ID CWTWB1U840?

FCC ID CWTWB1U840 is verified in our catalog for Nissan (Leaf, Sentra, Versa), model years 2012–2019.

What chip and frequency does CWTWB1U840 use?

CWTWB1U840 keys use the PCF7952A / HITAG 2 / 46 CHIP transponder chip and operate at 315 MHz.

Is there a replacement for CWTWB1U840?

Yes — Car Key Source stocks 2 (1 genuine OEM, 1 aftermarket) smart key replacements for FCC ID CWTWB1U840, sold wholesale to the trade with US & Canada same-day dispatch.

What original part numbers cross-reference to CWTWB1U840?

FCC ID CWTWB1U840 cross-references to original part number 285E3-3SG0D — our replacements are matched against these originals.

More Nissan FCC IDs we stock

Browse all FCC IDs

Need help confirming fit for CWTWB1U840?

Leave your email and phone — we’ll verify the cross-reference against the vehicle on your bench and reply with the exact SKU. No spam, ever.

So we can call you about fitment or your order.

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