Loading...

NHTSA ID Number: 10154040

Manufacturer Communication Number: LTB01238NAS2

TSB/Document Date: 2019-03-04


Summary

A 'Smart key not found' message may be displayed on the Instrument Cluster and poor Smart key operation may be evident.


https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

4/13

2/5/2019

LTB01238NAS2 - 'Smart key not found' Message Displayed and Poor Smart key Operation | TOPIx

Connect the JaguareBay logo Land RovereBay logo-approved diagnostic equipment to the vehicle and begin a
new session.
3

NOTE:
The JaguareBay logo Land RovereBay logo-approved diagnostic equipment will read the correct Vehicle
Identification Number (VIN) for the current vehicle and automatically take the vehicle
out of Transit mode (if required).
Follow all on-screen instructions.

4

Select ECU Diagnostics.

5

Select All DTCs.
If any DTC (Diagnostic Trouble Code) is stored in the Remote Function Actuator
(RFA), do not continue with this Technical Bulletin; investigate and repair (see
TOPIx Workshop Manual section 419-01: Anti-Theft -- Passive -- Diagnosis and
Testing -- Anti-Theft -- Passive). To be performed as a separate claim.
If there are no DTCs stored in the RFA, continue to the Workshop Procedure
below.

6

Exit the current session.
1 If required, reset the vehicle to Transit mode.
2 Select the Exit icon.

7

Disconnect the diagnostic equipment and battery power supply from the vehicle.

S E R V I C E I N F O R M AT I O N :

NOTE:
Some components have been removed for clarity.
https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

5/13

2/5/2019
1

LTB01238NAS2 - 'Smart key not found' Message Displayed and Poor Smart key Operation | TOPIx

Discovery: Coaxial cable wiring harness route.

https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

6/13

2/5/2019
2

LTB01238NAS2 - 'Smart key not found' Message Displayed and Poor Smart key Operation | TOPIx

Range Rover Sport: Coaxial cable wiring harness route.

https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

7/13

2/5/2019
3

LTB01238NAS2 - 'Smart key not found' Message Displayed and Poor Smart key Operation | TOPIx

Range Rover: Coaxial cable wiring harness route.

W O R K S H O P P R O C E D U R E ' A ' - D I S C O V E R Y, R A N G E R O V E R S P O R T :

NOTES:
If the keyless entry functionality is correct, do not continue with this Technical Bulletin.
Continue diagnosis using the JaguareBay logo Land RovereBay logo-approved diagnostic equipment and the
TOPIx Workshop Manual.
Check the voltage of the Smart key battery and replace if required.
The coaxial cable and Radio Frequency (RF) antenna cannot be replaced separately.
1

WARNING:
Avoid damage to the headliner.

https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

8/13

2/5/2019

LTB01238NAS2 - 'Smart key not found' Message Displayed and Poor Smart key Operation | TOPIx

Lower the headliner for access.
DISCOVERY: (see TOPIx Workshop Manual section 501-05: Interior Trim and
Ornamentation -- Removal and Installation -- Headliner -- Removal Steps 1-22).
RANGE ROVER SPORT: (see TOPIx Workshop Manual section 501-05: Interior
Trim and Ornamentation -- Removal and Installation -- Headliner Remove for
Access and Refit).
2

Remove the loadspace right trim panel (see TOPIx Workshop Manual section 501-05: Interior
Trim and Ornamentation -- Removal and Installation -- Right Loadspace Trim Panel).

3

Remove the luggage compartment right upper trim panel (see TOPIx Workshop Manual
section 501-05: Interior Trim and Ornamentation -- Removal and Installation -- Luggage
Compartment Upper Trim Panel).

4

Verify that the coaxial cable from the Radio Frequency (RF) antenna to the Remote Function
Actuator (RFA) is correctly routed, secured in position, and is not trapped. Inspect the
condition of the connectors and the connector pins between the RF antenna and RFA for
damage. Make sure that connections are secure. Refer to the Service Information section
above for wiring harness routes and locations.
If the coaxial cable is damaged, incorrectly routed, or trapped, go to Step 7.
If the coaxial cable and/or connectors and connector pins are damaged, go to
Step 6.
If the coaxial cable is incorrectly routed or trapped, but no damage has occurred,
go to Step 5.

5

NOTE:
Re-use the adhesive pads where possible.
Route the coaxial cable as shown in the Service Information section above and secure in place
with adhesive pads to make sure the cable will remain in its position.
1 When all tasks are finished, go to Step 7

https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

9/13

2/5/2019
6

LTB01238NAS2 - 'Smart key not found' Message Displayed and Poor Smart key Operation | TOPIx

NOTE:
The Radio Frequency (RF) antenna must be located correctly in place by applying gentle
pressure only to both sides -- not in the middle -- of the antenna body.
Renew the RF antenna and Coaxial cable.
1 Route the coaxial cable as shown in the Service Information section above; secure in
place with adhesive pads to make sure the cable will remain in position
2 When all tasks are finished, go to Step 7

7

Test the Smart key functions.
If the customer concern is not evident (Smart key does function correctly), go to
Step 8.
If the customer concern is evident (Smart key does not function correctly),
diagnosis using the JaguareBay logo Land RovereBay logo-approved diagnostic equipment and
TOPIx Workshop Manual.

8

Install the luggage compartment right upper trim panel (see TOPIx Workshop Manual section
501-05: Interior Trim and Ornamentation -- Removal and Installation -- Luggage Compartment
Upper Trim Panel).

9

Install the loadspace right trim panel (see TOPIx Workshop Manual section 501-05: Interior
Trim and Ornamentation -- Removal and Installation -- Right Loadspace Trim Panel).

10

WARNING:
Avoid damage to the headliner.
Install the headliner.
DISCOVERY: (see TOPIx Workshop Manual section 501-05: Interior Trim and
Ornamentation -- Removal and Installation -- Headliner -- Install Steps 8-11 only).
RANGE ROVER SPORT: (see TOPIx Workshop Manual section 501-05: Interior
Trim and Ornamentation -- Removal and Installation -- Headliner Remove for

https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

10/13

2/5/2019

LTB01238NAS2 - 'Smart key not found' Message Displayed and Poor Smart key Operation | TOPIx

Access and Refit).

WORKSHOP PROCEDURE 'B' - RANGE ROVER:

NOTES:
If the keyless entry functionality is correct, do not continue with this Technical Bulletin.
Continue diagnosis using the JaguareBay logo Land RovereBay logo-approved diagnostic equipment and the
TOPIx Workshop Manual.
Check the voltage of the Smart key battery and replace if required.
The coaxial cable and Radio Frequency (RF) antenna cannot be replaced separately.
1

WARNING:
Avoid damage to the headliner.
Lower the headliner for access (see TOPIx Workshop Manual section 501-05: Interior Trim and
Ornamentation -- Removal and Installation -- Headliner Remove for Access and Refit).

2

Remove the loadspace left trim panel (see TOPIx Workshop Manual section 501-05: Interior
Trim and Ornamentation -- Removal and Installation -- Left Loadspace Trim Panel).

3

Remove the luggage compartment left upper trim panel (see TOPIx Workshop Manual section
501-05: Interior Trim and Ornamentation -- Removal and Installation -- Luggage Compartment
Upper Trim Panel).

4

Verify that the coaxial cable from the Radio Frequency (RF) antenna to the Remote Function
Actuator (RFA) is correctly routed, secured in position, and is not trapped. Inspect the
condition of the connectors and the connector pins between the RF antenna and RFA for
damage. Make sure that connections are secure. Refer to the Service Information section
above for wiring harness routes and locations.
If the coaxial cable is damaged, incorrectly routed, or trapped, go to Step 7.

https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

11/13

2/5/2019

LTB01238NAS2 - 'Smart key not found' Message Displayed and Poor Smart key Operation | TOPIx

If the coaxial cable and/or connectors and connector pins are damaged, go to
Step 6.
If the coaxial cable is incorrectly routed or trapped, but no damage has occurred,
go to Step 5.
5

NOTE:
Re-use the adhesive pads where possible.
Route the coaxial cable as shown in the Service Information section above and secure in place
with adhesive pads to make sure the cable will remain in its position.
1 When all tasks are finished, go to Step 7

6

NOTE:
The Radio Frequency (RF) antenna must be located correctly in place by applying gentle
pressure only to both sides -- not in the middle -- of the antenna body.
Renew the RF antenna and Coaxial cable.
1 Route the coaxial cable as shown in the Service Information section above; secure in
place with adhesive pads to make sure the cable will remain in position
2 When all tasks are finished, go to Step 7

7

Test the Smart key functions.
If the customer concern is not evident (Smart key does function correctly), go to
Step 8.
If the customer concern is evident (Smart key does not function correctly),
diagnosis using the JaguareBay logo Land RovereBay logo-approved diagnostic equipment and
TOPIx Workshop Manual.

8

Install the luggage compartment left upper trim panel (see TOPIx Workshop Manual section
501-05: Interior Trim and Ornamentation -- Removal and Installation -- Luggage Compartment
Upper Trim Panel).

https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

12/13

2/5/2019
9

LTB01238NAS2 - 'Smart key not found' Message Displayed and Poor Smart key Operation | TOPIx

Install the loadspace left trim panel (see TOPIx Workshop Manual section 501-05: Interior Trim
and Ornamentation -- Removal and Installation -- Left Loadspace Trim Panel).

10

WARNING:
Avoid damage to the headliner.
Install the headliner (see TOPIx Workshop Manual section 501-05: Interior Trim and
Ornamentation -- Removal and Installation -- Headliner Remove for Access and Refit).

https://topix.landrover.jlrext.com/topix/content/document/view?id=950973

13/13

12

SaleBestseller No. 1
Autel Scanner MaxiCOM MK900BT, 2026 MK900-BT V2.0 Bidirectional Diagnostic Tool, 8in Up of MK900 MX900 MK808S MK808BT MX808S MK808Z, 3000+ Active Tests, 40+ Service, CAN-FD&DOIP, All System, FCA 11 OS
  • 💯【Conta.ct us for Support Directly】If you met any...
  • 🔥🔥🔥【2026 AUTEL FLAGSHIP MK900BT MK900-BT, NEW...
  • 🚗【3000+ ACTIVE TESTS (50➡3000+), SAME AS MS...
  • 🚗【40+ HOT SERVICES FOR 150 MAKES (28+➡40+)】Full...
  • 🚗【OE ALL SYSTEM DIAGNOSE, AUTO SCAN 2.0: SCAN LICENSE...
SaleBestseller No. 2
Autel Professional OBD2 Scanner AL319 Code Reader, Enhanced Check and Reset Engine Fault Code, Live Data, Freeze Frame, CAN Car Diagnostic Scan Tools for All OBDII Vehicles After 1996, 2026 Upgraded
  • 【TURN OFF CEL】 This AL319 car scanner diagnostic tool...
  • 【EXTENSIVE APPLICATION】 Autel AL319 Compatible with...
  • 【FOR END USER & DIYERS】 This error code reader AL319 is...
  • 【USER-FRIENDLY DESIGN】 This OBD2 scanner and check...
  • 【HIGH-QUALITY SERVICES】 12 months war.ranty from the...

Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API


 


If the PDF is very large, it may not load in the preview below.

Download PDF [388.32 KB]


Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.

If the TSB PDF does not show, download or view it on the NHTSA Website.

Click on the (+) Plus Sign

Then Click on Associated Document(s)


Search NHTSA Database for Recalls

View Latest Recalls


Search NHTSA Database for Vehicle Investigations

View Latest Vehicle Investigations


Search NHTSA Database for Vehicle Complaints

View Latest Vehicle Complaints


TSB/Document ID: LTB01238NAS2

Replacement Service Bulletin Number:

MFR Communication Date: 2019-01-10

MFR Internal Campaign ID/Software Version:

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: EQUIPMENT

MFR Component System:

MFR Component Subsystem:


Previous TSB

Next TSB



SaleBestseller No. 1
ANCEL X7HD PRO 10.1'' Heavy Duty Truck Scanner, Full-System Diesel Diagnostic Tool with DPF Regen, 42+ Reset, Bi-Directional and Active Test, ECU Coding, HDOBD/OBD2 Scanner for Diesel Trucks - Grey
  • 2026 ALL-IN-ONE HEAVY DUTY TRUCK SCANNER – BUILT FOR DIESEL DIAGNOSTICS:The ANCEL X7HD PRO combines full-system diagnostics, bi-directional control, ECU coding, HDOBD/OBD2 functions, and 42+ reset services in one powerful heavy duty truck scanner. This diesel scan tool helps technicians, fleet owners, and repair shops diagnose problems faster, reduce downtime, and complete more repairs without switching between multiple truck diagnostic tools. Features a 10.1" Android tablet, Bluetooth & Wi-Fi, live data graphing, and 2 years of f-ree updates
  • 42+ RESET FUNCTIONS – MORE THAN A BASIC TRUCK CODE READER:Perform essential service functions including forced DPF regeneration, injector coding, speed limiter adjustment, idle adjustment, oil reset, ABS reset, SRS reset, EPB reset, throttle reset, and suspension calibration. Designed for real truck maintenance and fleet service, this commercial truck diagnostic scanner helps reduce dealer visits, avoid unnecessary downtime, and handle more repair jobs with one diesel diagnostic tool
  • ACTIVE TEST & ECU CODING – ADVANCED BIDIRECTIONAL SCAN TOOL FOR TRUCKS:Quickly locate faults by activating components and sending commands directly to vehicle systems. Test injectors, ABS, throttle, cooling systems, and other modules in real time without unnecessary disassembly. ECU coding and module matching help adapt replacement parts, restore factory settings, and reduce repeat repairs, making this semi truck scan tool ideal for advanced troubleshooting and daily shop work
  • FULL-SYSTEM HDOBD/OBD2 DIAGNOSTICS – WIDE TRUCK & ENGINE COVERAGE:Read and clear codes, monitor live data, freeze frame, and diagnose engine, transmission, ABS, body, and other major systems. Compatible with FreightlinereBay logo, KenwortheBay logo, PeterbilteBay logo, VolvoeBay logo, MackeBay logo, InternationaleBay logo, and other commercial truck brands, plus CumminseBay logo, CaterpillareBay logo, Detroit, PaccareBay logo, and NavistareBay logo diesel engines. Also supports full OBD2/EOBD diagnostics for standard vehicles, making it a versatile truck obd2 scanner for mixed fleets and repair shops
  • PROFESSIONAL HARDWARE + RELIABLE SUPPORT – BUILT FOR DAILY SHOP USE:This professional diesel diagnostic computer features a 10.1" touchscreen, Android 10.0 system, 6000mAh battery, Bluetooth/Wi-Fi connectivity, and built-in front & rear cameras for documenting repairs and remote troubleshooting. Includes 2 years of fr-ee updates, 1-year w-arranty, and responsive technical support. Contact [email protected] before purchase to confirm compatibility and supported functions for your truck or diesel engine
SaleBestseller No. 2
ANCEL New HD601 Heavy Duty Truck Scanner, Diesel Full System Diagnostic Scan Tool Fits for Cummins, Detroit, Volvo, Paccar & Caterpillar, 2 in 1 HDOBD & OBD2 Code Reader for Commercial Vehicles & Cars
  • 【Built for Heavy Duty Diesel Diagnostics】Designed for SAE J1939 and J1708 compliant trucks, buses, and diesel-powered commercial vehicles. HD601 truck scanner diagnostic tool helps owner-operators, small fleets, mobile technicians, and independent repair shops quickly identify fault codes, view live data, and make informed repair decisions—saving time, reducing downtime, and avoiding unnecessary shop visits
  • 【Full System Diagnostics+All HD OBD Modes】The New HD601 heavy duty truck scanner delivers full-system diagnostics on SAE J1939 and J1708-compliant commercial vehicles—digging into engine, transmission, ABS, fuel, every system that keeps your rig rolling. It supports all HD OBD modes, giving you live data, freeze frame, ECU info, vehicle info, emissions data tracking, plus code reading and clearing. Not just what broke, but why—so you fix it right the first time. Pinpoint issues faster, cut repair costs, and spend less time on the shoulder
  • 【Wide Heavy-Duty Vehicle Coverage】Supports a wide range of heavy-duty vehicle manufacturers and systems, including FreightlinereBay logo, KenwortheBay logo, PeterbilteBay logo, VolvoeBay logo, InternationaleBay logo, Detroit, CumminseBay logo, PaccareBay logo, Allison, EatoneBay logo, BendixeBay logo, Wabco, and more. Coverage varies by vehicle make, model, year, and system configuration. Contact our support team before purchase if compatibility verification is needed
  • 【Speaks Major Truck Protocol】The New HD601 diesel truck scanner is built for American-made trucks—and supports the heavy‑duty protocols you' re most likely to run into on the road: SAE J1939, J1708/J1587, ISO 15765‑4, ISO 14230‑4, ISO 9141‑2, J1850 PWM/VPW, ISO 27145‑4, and EURO‑6. For most trucks, model years, and systems, it speaks the language your vehicle understands. Just plug it in and start diagnosing—no guesswork, no gatekeeping. Note: vehicle functions and module availability may vary by manufacturer and model year
  • 【Save Hundreds on Diagnostic Fees】Why pay $150–300 for someone to read your codes? With the New ANCEL heavy duty truck scanner, you can pull fault codes yourself—in minutes, without leaving the truck. One or two uses pays for the tool. After that, every diagnostic is money back in your pocket. Smart investment for owner-operators, techs, and small fleets. Read and clear stored fault codes in minutes. Active fault codes may require repairs before they can be cleared
SaleBestseller No. 3
FOXWELL HD301 Heavy Duty Truck Scanner, Full System Diesel Scan Tool with 6/9/16 Pin, 2 in 1 Code Reader for Trucks & Car Engine, Diesel Diagnostic Tool for Cummins, Paccar, Caterpillar
  • 【One Tool, Total Fleet Coverage: 6/9/16 Pin Ready】Featuring an integrated 16-pin OBD2 connector and professional-grade 6-pin & 9-pin adapters, this heavy duty truck scanner provides extensive support for J1939, J1708, J1587, ISO 14230-4, ISO 15765-4 and ISO 9141-2, ISO 27145-4 protocols. It offers reliable diagnostic coverage for major American diesel brands—including CumminseBay logo, PaccareBay logo, CaterpillareBay logo, Detroit, and FreightlinereBay logo—making it a versatile semi truck scanner for managing any diverse fleet.
  • 【2 in 1 Diesel Code Reader & Advanced HD OBDII】Equipped with professional-grade diesel scanner capabilities, the HD301 features intuitive Read/Erase codes and turn off the "Check Engine" light. With the built-in DTC Lookup library, you can instantly access fault code definitions on-device without searching the internet. It also retrieves hundreds of essential live sensor data—such as coolant temperature, fuel pressure, and engine RPM—in a stable text format for precise and rapid troubleshooting. (Please note that the HD301 can not support DPF Regen.)
  • 【Full System Truck Diagnostic】The FOXWELL HD301 heavy duty scan tool is engineered to deeply access and scan all available electronic control modules specifically for truck, including Engine, Transmission, ABS, SRS, Chassis, and Body Control. This professional truck scanner diagnostic tool allows you to identify issues across the entire vehicle, ensuring your rig stays in peak condition for the long haul.
  • 【Versatile for most big Rigs: Commercial, Passenger & Beyond】Engineered for more than just trucks, this heavy duty scan tool offers extensive coverage for pickups, buses, trailers, and even marine vessels. From construction machinery (excavators, loaders) to agricultural equipment (tractors, harvesters), it provides a true all-in-one diagnostic solution.
  • 【Plug-and-Play & No Subscription】Designed for the road! No WiFi, no batteries, and no complex App setup required. Simply plug it into your vehicle’s diagnostic port to start scanning immediately. Enjoy lifetime free software updates to keep your HD301 diesel truck scanner current with the latest vehicle models and features—without any hidden subscription fees—While overcoming language barriers with support for Spanish and English.

Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API


 


This product presentation was made with AAWP plugin.

Share to...