PEPS Part ReplacementProcedure
Title: PEPS System Part Replacement Procedure
Spec Num 2921 XX XXX A XXXXTBD
Date:
28-Jul-18
Version:
1.5
Page: 15 of 25
Prepared:
Sandip
Checked:
Santosh B
Approved:
Dinesh DG
Thisspecification isthe exclusive property of Tata MotorsLimited. Withouttheir consent it may not be reproduced or given to third
parties
.
The above specificationsare subject to change and therefore suppliersare requested to refer the latest one.
CONTROLLED COPY FOR RESTRICTED CIRCULATION
© TATA MOTORS LTD.
2.3.
Smart key orWearable learningprocedure
NOTE:
Please note procedure of learning wearable and smart key is same. Whenever
required, keep wearable near to console antenna same way you are keeping smart key near to
console antenna.
Prerequisite:
All smart keys and wearable (if any) to be learnt shall be available.
NOTE:
1) Total numbers of smart keys or wearable to be learnt are considered as 2.
2) Indicated operational steps along with timings to be followed else learning operation will fail.
PROCEDURE:
1) No IGN ON is mandatory to learn smart key or wearable with PEPS ECU. Only PEPS ECU
shall be in awake mode which shall be achieved by turning and keeping ONposition lamps
or hazard lamps till learning is done.
2) If fresh ECU is present, Free IGNON are available i.e. user can turn ON IGN without smart
key or wearable is learned for 25 times.
3) Place the Smart Key or wearable to be learnt within 7 cm around the front / console
antenna.
4) Run “Start transponder learning routine initial” through diagnostics. PEPS check the validity
of the key or wearable. Refer latest PEPS ESDS for detailed procedure.
5) If above steps is OK, all previous learned smart keys and wearable data are deleted (if
any). Immobilizer lamp start blinking (ON=0.1sec, OFF=0.4sec) indicating that PEPS is
learning the smart key or wearable.
6) Once respective key or wearable is learnt, Immobilizer lamp remains ON indicating that
PEPS has learnt the key. Refer latest PEPS ESDS for detailed procedure.
7) If next key or wearable to be learnt,
a) Remove already learnt key or wearable from console antenna area and place next
key to be learnt within 10 sec.
b) Once respective key or wearable is learnt, Immobilizer lamp remains ON indicating
that PEPS has learnt the key or wearable.




