Showing posts with label Electrical - Vehicle Doesn't Perform Automatic Engine Stop. Show all posts
Showing posts with label Electrical - Vehicle Doesn't Perform Automatic Engine Stop. Show all posts

Friday, July 5, 2019

Mercedes-Benz A220 2020 Technical Service Bulletin # LI54-10_P-053538 Date: 120405


Electrical - Vehicle Doesn't Perform Automatic Engine Stop



Vehicle does not perform automatic engine stop



Topic number LI54.10-P-053538



Version 1



Mercedes-Benz A220 2020 Page 72



Design group 54.10 Battery, voltage supply, voltage converter



Date 04-05-2012



Validity Model series 169, 245 with code B01



Model series 204 with SA code B03



Model series 172 with SA code B03



Reason for change



Complaint:



The vehicle does not perform the automatic engine stop although the ECO function was activated via the ECO button.



Cause:



Battery sensor transmitting incorrect temperature value



The temperature value and/or voltage value transmitted by the battery sensor is constant and does not change



Remedy:



IMPORTANT:



- On no account should the sensor be de-energized prior to the test, i.e. do not disconnect the ground terminal on the battery, otherwise a reset



will occur and the result of the function test will be inaccurate.



- Sensors that previously transmitted a constant temperature value could then become OK temporarily, i.e. the fault will not be rectified!



Function test of battery sensor:



a) Check the temperature value:



A battery sensor that transmits a constant temperature value of -40锟斤拷C or +120锟斤拷C must be replaced.



A battery sensor that transmits a constant value between -40锟斤拷C and +120锟斤拷C must be tested as follows:



- Required aids:



- Xentry



- Multimeter capable of measuring temperatures



1. Measure the ambient temperature at which the vehicle has been kept for some time (e.g. the outside temperature if the vehicle has been



standing outdoors for some time)



2. Measure the outside temperature of the battery on the negative terminal clamp directly at the IBS using a suitable measuring instrument



3. Using Xentry, read out the current battery temperature: - Select BSN - Battery sensor (B95) # Current data of battery sensor # Battery



temperature



- Compare these three temperatures, the ambient temperature, the temperature at the battery negative terminal and the battery temperature (from



Xentry), taking into account a tolerance range of +/- 3锟斤拷C.



- Repeat the test after approx. 30 mm in order to rule out delayed reaction of the battery sensor to temperature changes.



If the value transmitted by the battery sensor is outside the tolerance, the battery sensor must be replaced.



b) Check the transmitted voltage value:



- Start the engine. Does the voltage value measured by the battery sensor change?



- If the transmitted voltage value remains constant, the battery sensor must be replaced.



Symptoms



Mercedes-Benz A220 2020 Page 73

Saturday, November 3, 2018

Electrical - Vehicle Doesn't Perform Automatic Engine Stop

Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) Technical Service Bulletin # LI54-10_P-053538 Date: 120405



Electrical - Vehicle Doesn't Perform Automatic Engine Stop



Vehicle does not perform automatic engine stop



Topic number LI54.10-P-053538



Version 1



2010 Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) Page 38



Design group 54.10 Battery, voltage supply, voltage converter



Date 04-05-2012



Validity Model series 169, 245 with code B01



Model series 204 with SA code B03



Model series 172 with SA code B03



Reason for change



Complaint:



The vehicle does not perform the automatic engine stop although the ECO function was activated via the ECO button.



Cause:



Battery sensor transmitting incorrect temperature value



The temperature value and/or voltage value transmitted by the battery sensor is constant and does not change



Remedy:



IMPORTANT:



- On no account should the sensor be de-energized prior to the test, i.e. do not disconnect the ground terminal on the battery, otherwise a reset



will occur and the result of the function test will be inaccurate.



- Sensors that previously transmitted a constant temperature value could then become OK temporarily, i.e. the fault will not be rectified!



Function test of battery sensor:



a) Check the temperature value:



A battery sensor that transmits a constant temperature value of -40锟斤拷C or +120锟斤拷C must be replaced.



A battery sensor that transmits a constant value between -40锟斤拷C and +120锟斤拷C must be tested as follows:



- Required aids:



- Xentry



- Multimeter capable of measuring temperatures



1. Measure the ambient temperature at which the vehicle has been kept for some time (e.g. the outside temperature if the vehicle has been



standing outdoors for some time)



2. Measure the outside temperature of the battery on the negative terminal clamp directly at the IBS using a suitable measuring instrument



3. Using Xentry, read out the current battery temperature: - Select BSN - Battery sensor (B95) # Current data of battery sensor # Battery



temperature



- Compare these three temperatures, the ambient temperature, the temperature at the battery negative terminal and the battery temperature (from



Xentry), taking into account a tolerance range of +/- 3锟斤拷C.



- Repeat the test after approx. 30 mm in order to rule out delayed reaction of the battery sensor to temperature changes.



If the value transmitted by the battery sensor is outside the tolerance, the battery sensor must be replaced.



b) Check the transmitted voltage value:



- Start the engine. Does the voltage value measured by the battery sensor change?



- If the transmitted voltage value remains constant, the battery sensor must be replaced.



Symptoms



2010 Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) Page 39

Sunday, October 21, 2018

Electrical - Vehicle Doesn't Perform Automatic Engine Stop

Mercedes Benz C 250 (204.052) (CANADA) V6-2.5L (272.921) Technical Service Bulletin # LI54-10_P-053538 Date: 120405



Electrical - Vehicle Doesn't Perform Automatic Engine Stop



Vehicle does not perform automatic engine stop



Topic number LI54.10-P-053538



Version 1



Page 38



Design group 54.10 Battery, voltage supply, voltage converter



Date 04-05-2012



Validity Model series 169, 245 with code B01



Model series 204 with SA code B03



Model series 172 with SA code B03



Reason for change



Complaint:



The vehicle does not perform the automatic engine stop although the ECO function was activated via the ECO button.



Cause:



Battery sensor transmitting incorrect temperature value



The temperature value and/or voltage value transmitted by the battery sensor is constant and does not change



Remedy:



IMPORTANT:



- On no account should the sensor be de-energized prior to the test, i.e. do not disconnect the ground terminal on the battery, otherwise a reset



will occur and the result of the function test will be inaccurate.



- Sensors that previously transmitted a constant temperature value could then become OK temporarily, i.e. the fault will not be rectified!



Function test of battery sensor:



a) Check the temperature value:



A battery sensor that transmits a constant temperature value of -40锟斤拷C or +120锟斤拷C must be replaced.



A battery sensor that transmits a constant value between -40锟斤拷C and +120锟斤拷C must be tested as follows:



- Required aids:



- Xentry



- Multimeter capable of measuring temperatures



1. Measure the ambient temperature at which the vehicle has been kept for some time (e.g. the outside temperature if the vehicle has been



standing outdoors for some time)



2. Measure the outside temperature of the battery on the negative terminal clamp directly at the IBS using a suitable measuring instrument



3. Using Xentry, read out the current battery temperature: - Select BSN - Battery sensor (B95) # Current data of battery sensor # Battery



temperature



- Compare these three temperatures, the ambient temperature, the temperature at the battery negative terminal and the battery temperature (from



Xentry), taking into account a tolerance range of +/- 3锟斤拷C.



- Repeat the test after approx. 30 mm in order to rule out delayed reaction of the battery sensor to temperature changes.



If the value transmitted by the battery sensor is outside the tolerance, the battery sensor must be replaced.



b) Check the transmitted voltage value:



- Start the engine. Does the voltage value measured by the battery sensor change?



- If the transmitted voltage value remains constant, the battery sensor must be replaced.