STAR Case
Case Number: S1408000384
Release Date: 02/22/2020
Symptom/Vehicle Issue: Intelligent Battery Sensor-IBS Installation, Battery Charging Message,
Start Stop Charging Warning Lamp Illuminated On Stop Start Equipped Vehicles
Discussion: Installation process for IBS sensor and proper charging batteries.
Note: START/STOP will be unavailable if battery SOC (state of charge) is not in
the proper range. The SOC state is monitored by the PCM and BCM. Battery
temperature and SOC (State of charge are critical) see chart for start stop engine
on conditions.
Display example on a stop start vehicle
A common misdiagnosis is Battery light illuminated, the IBS has
NOTHING to do with this Battery light and does not cause MIL Lights.
A Battery Light illuminated IS a charging system issue, not an IBS issue.
The IBS measures voltage, current and temperature of the battery and only provides
this information back to the BCM module.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Center
Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Chrysler Group LLC Contact the STAR Center for assistance if no solution is found Version 5/23/13
STAR Case
The IBS DOES NOT NEED TO BE REPLACED with NEW OR
RECHARGED batteries.
The IBS should only be replaced, if a DTC for the IBS is active.
The IBS maintains a running record of Amp Hours received and Amp Hours
released.
Proper charging In-Vehicle systems is not an issue.
Please note to charge through the IBS or tie negative clamp to body/engine ground.
Customers, Dealers, Mechanics, and Engineers require battery charger or tester (i.e.
Midtronics GR-8 Negative clamp) be connected only onto the IBS module (B-)
Negative battery post.
Connecting the battery charger or tester onto the (B-) battery post creates “blind
charging”.
“DO NOT BLIND CHARGE”.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Center
Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Chrysler Group LLC Contact the STAR Center for assistance if no solution is found Version 5/23/13
STAR Case
IBS learning needs 1-2 key cycles and 2-4 hours of quiescent/sleep time (no charge in
or no charge out of the battery). Quiescent (Sleep) time is defined as <250mA +-
50mA. (no added loads).
If ESS is still unavailable, review ESS parameters from wiTech2.
If the installation of a new IBS is required, it be should installed onto a fully charged
battery and follow the same learn procedure above.
What defines an IBS failure before returning to Supplier:
Active IBS DTC which does not clear.
U113E
(note: this DTC can mean, blown 5A PDC fuse or broken (pinched) +12V
or LIN wire or failed BCM (LIN 1).
See below proper connections for Proper battery charging.
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Center
Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Chrysler Group LLC Contact the STAR Center for assistance if no solution is found Version 5/23/13
STAR Case
14 min / 14 min /
16 nom / 6 min / 7 nom / 16 nom / 18 6 min / 7 nom /
18 max (N-m) 8 max (Nm) max (N-m) 8 max (Nm)
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Center
Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Chrysler Group LLC Contact the STAR Center for assistance if no solution is found Version 5/23/13
STAR Case
10 min /
11 nom / 6 in / 7 nom / 8 max (N-m)
12 max (N-m) 6 in / 7 nom /
8 max (N-m)
10 min /
11 nom /
12 max (N-m)
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Center
Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Chrysler Group LLC Contact the STAR Center for assistance if no solution is found Version 5/23/13
STAR Case
(Example) Stop-start Engine ON conditions:
1. Gear and brake switch conditions valid.
2. Completed initial engine key start.
3. Occupant sensed allowing engine start conditions.
4. OBD conditions met allowing engine start conditions SOC (State Of Charge) values found under OBDII
monitors using wiTech 2.
5. Vehicle hood is closed
Engine OFF conditions: Max Min True/False
1. Valid target gear and brake switch state combination NA NA True
2. Threshold vehicle speed exceeded or timeout since last shift NA NA True
out of reverse
3. Transmission ready NA NA True
4. Tow Haul mode not active NA NA True
5. 4WD Low mode not active True
6. Starter cool down condition met after reaching max True
allowable consecutive restarts
7. Ambient temperature within defined range -10F 110F
8. Engine coolant temperature within defined range 40C 110C
9. Catalyst temperature within defined range 150F 950F
10. Battery temperature within defined range -256F 256F
11. Barometric pressure greater than threshold 60KPa
12. Brake booster delta pressure less than threshold 20kPa
13. Steering wheel angle within defined range
14. Steering wheel angle gradient within defined range
15. Steering column torque within defined range
16. Fuel level greater than threshold
17. Vehicle hood closed
18. No throttle request
19. No engine stop disable request by HVAC
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Center
Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Chrysler Group LLC Contact the STAR Center for assistance if no solution is found Version 5/23/13
STAR Case
20. Battery state of charge greater than threshold 65%
21.
22. Battery voltage state of function greater than threshold 8 volts
23. Battery health state of function greater than threshold 40 ah
24. Engine speed less than threshold 1000 rpm
25. Vehicle speed less than threshold 0
26. Threshold vehicle speed exceeded since last engine start 8 mph
27. Occupant sensing allow engine stop condition met True
28. OBD allow engine stop condition met True
29. Engine runtime greater than threshold 3 seconds
30. Stop-Start enable switch activated by driver True
31. Flex fuel learn mode not active True
32. ABS brake event not present True
(Example) - Dealer wiTech2 Screen:
This document does not authorize warranty repairs. This communication documents a record of past experiences. STAR Center
Online does not provide any conclusions about what is wrong with the vehicle. Rather, it captures all previous cases known that appear
to be similar or related to the vehicle symptom / condition. You are the expert, and you are responsible for deciding on the appropriate
course of action.
Chrysler Group LLC Contact the STAR Center for assistance if no solution is found Version 5/23/13
