Electrical - Random Sudden Battery Discharge
NO: 31- 09DATE: 12-6-2006
MODEL;
2005, 2006 S40 /V50
2005 XC90 (see note)
2006 XC90
2006 C70
SUBJECT: Battery Suddenly Discharges Due to ICM SW Bug
REFERENCE: VIDA fault tracing information TNN 38- 163f (campaign 163f)
NOTE: 2005 XC90s that have had either a total CAN upgrade / reload or an ICM upgrade / reload between May 2005 and May 2006 will have had the ICM bug introduced as a result.
Under certain conditions, vehicles listed above may suddenly experience a discharged battery. The condition occurs at random and will discharge the vehicle's battery after only one night parking. A software bug in the ICM (Infotainment Control Module) has been identified that may keep the infotainment relay and the CAN network active with the key out. Standby battery consumption is approx. 2 Amperes when the condition is present. Once the vehicle's battery is discharged, the condition will no longer be present until the next random occurrence.
If the Vehicle is listed above and the customer reports a discharged battery, perform normal fault tracing for excess current drain. If this proves inconclusive, perform an ICM upgrade.
S40 V50 C70 p/n 30667220
XC90 p/n 30677024
NOTE: This SW upgrade is performed as part of Campaign 163F on 2006 C70. Please refer to TNN 38-163f for more information
BACKGROUND INFORMATION: Normal quiescent current (standby battery consumption);
- If the car is locked with the remote control, the car should enter SLEEP Mode after a maximum of 5 minutes. If the car is not locked it can take as long as 30 minutes to enter sleep mode.
- In SLEEP mode the normal quiescent current can range from as low as 5 mA to as high as 25 mA depending on battery size and equipment levels. In SLEEP mode the vehicle network is not active.
NOTE: The mentioned values are EXCLUDING any additional installed equipment / accessories.