Which Cadillac CT4 does the 13538860 smart key fit?

The 13538860 smart key fits the Cadillac CT4 and CT5 2020-2024 with the 5-button layout. Match the part number printed on the back of the original key, and the button layout, before ordering. Keys for the same car can differ by trim, market and button count.

Is the FCC ID enough to pick the right key?

No. The FCC ID YGOG20TB1 is a radio approval that Cadillac also uses on 13536990, 13541988, 13548127. Those keys can fit other cars or have other buttons, so the part number 13538860 on the original key is the deciding reference.

What frequency and transponder chip does the 13538860 key use?

The 13538860 smart key transmits at 433 MHz and carries a HITAG Pro, ID49 transponder inside the housing. No separate chip is needed, but the key must be registered to the car with a diagnostic tool before it unlocks the doors or starts the engine.

How is the Cadillac CT4 2020-2024 smart key programmed?

The Cadillac CT4 and CT5 2020-2024 smart key is programmed over the OBD-II port with the dealer system or a locksmith key programmer that covers this model. This Global B platform needs a tool, and often an adapter, that covers it.

Is the emergency blade included with the 13538860 key?

Yes. The 13538860 smart key ships with its emergency insert blade, HU100 profile. The blade has to be cut to the vehicle's key code, by code or by decoding the door lock, before it opens the driver's door when the key battery is flat.

Is the 13538860 replacement a genuine Cadillac part?

No. This is an aftermarket 5-button smart key built to replace Cadillac part number 13538860 on the CT4 and CT5 2020-2024. It uses the same frequency and transponder type as the original and is programmed over OBD with the same tools.

Which battery does the 13538860 smart key take?

The 13538860 smart key runs on a CR2450 coin cell battery, fitted inside the housing. Replace it when the range drops or the dashboard shows a low key battery warning. If the battery is flat, hold the key against the start button to start the car.

Cadillac CT4 CT5 2020-2024 Smart Key 5-Button 13538860

Name: Cadillac CT4 CT5 2020-2024 Smart Key 5-button 433MHz - 13538860 - Aftermarket · New
Brand: DKEY1
SKU: B05476
Price: 125 AED
Availability: OutOfStock

Specification

Value

Vehicle Make

Cadillac

Condition

New Aftermarket

Country of Manufacture

China

Region

GCC & Europ, Usa & Canada

Frequency

433 MHz

Buttons Count

5-buttons

Weight

0.06 kg

Aftermarket · New

Cadillac CT4 CT5 2020-2024 Smart Key 5-Button

5-button · 433 MHz · ID49 · For FCC ID YGOG20TB1 · Part 13538860

Buttons

433 MHz

Frequency

ID49

Transponder chip

HU100

Blade included

⭐ This is an aftermarket replacement: a 5-button smart key for the Cadillac CT4 and CT5 2020-2024, Cadillac part number 13538860, transmitting at 433 MHz with a HITAG Pro, ID49 transponder. Its buttons cover lock, unlock, trunk, remote start, panic. It ships with a HU100 emergency insert blade and is registered over OBD with a diagnostic tool. The same radio approval is fitted to 13536990, 13541988, 13548127, so the part number, not the FCC ID, decides the order.

⚙️ Key features

5-button layout

Lock, unlock, trunk, remote start, panic.

433 MHz with ID49

433 MHz transmitter paired with a HITAG Pro, ID49 transponder for proximity entry and push-button start.

FCC ID is shared

Its radio approval is also used on 13536990, 13541988; the part number 13538860 is the reference.

CR2450 coin cell

Runs on a user-replaceable CR2450 battery. The emergency blade slides out of the housing.

💎 Benefits

Same layout as the original

Customers get back the 5 functions they use every day, with nothing missing on handover.

One order, one visit

Key and HU100 blade arrive together, ready to program and cut in one visit.

Clear part reference

Part number 13538860 on the listing makes it quick to match against the customer's key.

Lower cost per job

Keeps add-key and all-keys-lost jobs profitable without a dealer order.

👥 Who it's for

Automotive locksmiths

Add-key and all-keys-lost jobs on the Cadillac CT4 and CT5 with OBD key programmers.

Key shops and counter trade

Stock for walk-in spare key requests on the CT4 and CT5.

Dealers and garages

Replacement keys for used CT4 and CT5 stock and service customers.

🚗 Compatible vehicles

CADILLACCT42020-2024

CADILLACCT52020-2024

Before ordering, match part number 13538860 or FCC ID YGOG20TB1 printed on the original key.

📦 What's included

✅ IN THE BOX

✔ 1 × aftermarket 5-button smart key with HITAG Pro, ID49 transponder

✔ 1 × emergency insert blade, HU100 profile

❌ NOT INCLUDED

✘ Programming to the vehicle - done over OBD with a diagnostic tool

✘ Cutting the emergency blade - cut to the vehicle's key code

📋 Specifications

📡 REMOTE

For FCC ID

YGOG20TB1

Frequency

433 MHz

Buttons

Key type

Smart proximity key, push-button start

🔐 TRANSPONDER & BLADE

Transponder chip

HITAG Pro, ID49

Emergency key blade

Included

Blade profile

HU100

📦 PHYSICAL & POWER

Battery

CR2450

Weight

60 g

Condition

Aftermarket · New

🔢 PART NUMBERS

13538860 part number

13536990 related number

13541988 related number

13548127 related number

IMPORTANT - READ BEFORE ORDERING

Global B platform - this Cadillac uses GM's Global B electrical platform; key learning over OBD needs a tool, and on many tools an adapter, that covers Global B, so check coverage for this CT4 and CT5 before booking.

Known programming trap - Same FCC family carries 4-button, 5-button and 315 / 433 MHz versions; match part number and frequency.

FCC ID is not enough - the same approval number is used on 13536990, 13541988, 13548127, so match part number 13538860 on the original.

Not the 85002120 key - the CT4 and CT5 4-button key without remote start; match 13538860 on the original.

Not the 13538864 key - the Escalade 6-button key; match 13538860 on the original.

Buttons follow the car's options - remote start, parking assist and power door buttons only work on a car fitted with those options.

Blade needs cutting - the emergency blade is cut to the vehicle's key code after the key is programmed.

Aftermarket key - not a Cadillac factory key; YGOG20TB1 is the FCC ID of the original key it replaces.

🛠️ Programming instructions

🔌OBD PROGRAMMING - DIAGNOSTIC TOOL REQUIRED

This proximity smart key cannot be learned by hand. It is registered to the car through the OBD-II port with a diagnostic tool.

Compatible tools: the GM dealer system (Techline Connect / SPS), or a locksmith key programmer whose software lists this model and year.

Add key (spare): connect over OBD with a tool that covers Global B and learn the new key with every key the customer keeps present.

All keys lost: the route depends on the tool and adapter coverage for Global B, so check it before the job.

Blade: cut the HU100 emergency blade to the vehicle's key code and test it in the driver's door.

Check coverage first: support depends on the tool's software version and the exact model year. Verify the Cadillac CT4 and CT5 2020-2024 smart key is in the tool's supported list before the job.