RAM Trucks Pickup 2026 Smart Key
RAM Smart Key (PCF7939MA) OHT-4882056
Overview
Key Type
Smart Key
Markets
USA, EU, AUO
Transponder
ID4A (PCF7939MA / HITAG AES)
Integrated
Frequency
433 MHz
Battery
CR2032
Transponder Cloning
No
Skill Level
Skilled
Universal Keys
Xhorse OHT-4882056: ID 0559 499
Test passed
Autel OHT-4882056: RAM 1500/2500/3500/4500/5500/1500(DT) ID4A
Not tested
Original Keys
3Buttons
4Buttons w/ Air Suspension
4Buttons w/ Engine Start
5Buttons w/ Remote Start, Power Tailgate
5Buttons w/ Air Suspension, Remote Start, Power Tailgate
Overview
Add key
OBD
All keys lost
OBD
Prepare dealer key
No
Remote programming
Automatic
All keys erased automatically
Not specified
Power supply
Recommended (if under 11.5V)
Additional cables required
Yes
Number of key slots
8
Key Programming via OBD
General Instructions
- OBD programming requires extra cable TDB084. The white connector of the TDB084 cable can be connected to any free point in the CAN BUS connector.
- If the RFH is locked, it has to be replaced before keys can be added.
- How to check if RFH is locked? Connect, bypass the SGM and read data. The last line should show the status of the RFH. RFH Locked or RFH Locked after performing means that the hub is locked.
- If "ECU LOCKED - NO SEED SENT" - perform a battery reset (by disconnecting the negative battery terminal) and try again with all doors closed.
RAM 1500 Picup RFH-Connection
Additional Cables and Adapters
Add Key
Choose any open connector spot on the GREEN bank, if all spots are populated, pick any one and remove the connector that's in place temporarily and use it for programming, replace when completed.
Programmers
Autel
Immobilizer Programming
Abrites AVDI
Immobilizer Programming
Xhorse
Immobilizer Programming
Smart Pro
Immobilizer Programming
TDB1000
Immobilizer Programming
Lonsdor K518 PRO
Immobilizer Programming
Code Series
L1-L3580 (Chrysler, Dodge, Eagle, Jeep, Plymouth) M1-M2618 (Chrysler, Dodge, Eagle, Jeep, Maserati, Mitsubishi, Plymouth, RAM, Sterling, Volkswagen)
Media
Emergency Key
Emergency blade cutting tutorial
Using XHORSE Condor XC-MINI PLUS II automatic machine
Overview
Double locked
No
Opening direction (LHD)
Clockwise
Decoder capability
Door LockBoot/Trunk
Decoding Tips
- All wafers are stamped with actual depth numbers.
- Position 1 is not used in the door lock.
- To decode the lock, read in the SAME direction as it was picked.
- Lishi 2-in-1 is s designed for code series M1-M2168 and VN0-VN1999 as it has 4 depths.
Overview
Original key glued
No
Synchronizing
No
Repair Instructions
- All smart keys have an integrated immobilizer chip.
- There is no need to synchronize or reprogram the key after replacing the battery.