The repair methods given by the manufacturer in this document are based on the technical specifications, current at the time of release. The methods may be modified as a result of changes introduced by
the manufacturer in the production of the various component units and accessories from which the vehicles are manufactured. The reproduction, translation, transmission, in part of or whole of the present
document, are prohibited without the prior written consent of Mahindra & Mahindra Ltd. The use of this document by any person other than the trained personnel, at the Authorized Service Centre of
Mahindra & Mahindra Ltd., will amount to unauthorized use and shall be liable for penalty/prosecution© 2021 Mahindra & Mahindra Ltd.
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13.6 B2F42–00 — WRONG TXP
13.6.1 WRONG OR NEW KEY
Key which is being used in the vehicle is a valid key but doesn't belong to this vehicle or it is
not yet learnt to the vehicle
DTC Description EMS ECU UICU DTC Description
Immobilizer
Authentication failed
B2FFF—00 B2F42—00 Wrong TXP
— —
B2F44—00 No ECM challenge
— —
B2F45—00 Authentication failed/
time out
DTC INFORMATION PROBABLE CAUSES OF FAILURE
NORMAL OPERATION
• Ignition ON
• After successful security authentication, vehicle
starts normally
DTC DETECTING CONDITIONS
• This combination is registered when the signal
received from the key is valid, but not belongs to the
vehicle
DTC REACTIONS
• Immobilizer check lamp: ON
• Engine check lamp: BLINKS
• Starter will not engage
HEALING CONDITION
• Ignition OFF/ON
• Fault not present
• Key learning not happened
• Defective key or antenna
Diagnostic Manual
XUV700 (Diesel)
UICU
MAN-01065
OCT - 2021/Rev 1
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