Antitheft System - 'Replace Key Battery' Message Displayed
Date: April 4, 2013
Order No.: S-B-80.61/61a
Supersedes: S-B-80.61/61, March 2013
Group: 80
Revision a: Updated with notes indicating key information required.
SUBJECT:
All Model Vehicles with Keys that have One Battery
Instrument Cluster Message "Replace Key Battery"
Customer Complaint:
The message "Replace Key Battery" is displayed. Key battery life is perceived by the customer as being too short.
Condition/Background:
Product Technical Support is requesting specific data in order to further evaluate the technical aspects of this complaint.
Action:
Please open a PTSS case and include the following information in the case (scenario 1 & 2 below requires you to open and close the case with no
interaction from DTS):
Mercedes-Benz A220 2020 Page 464
Note:
If you have Excel, fill out the excel sheet in STAR TekInfo under DTS -> KG Key Battery Test Sheet and attach to case. If you attach the
excel sheet to the case, then you do not have to re-enter the information indicated below in the case.
Required Case Information per incoming complaint associated Key:
Key Number - Indicate key number (check via SDS)
Key Date Code - Date code of the (last 4 digits on barrel)
Brand - The brand of the battery (Duracel, Panasonic, etc.)
Tensioned - Does service history indicate previously tensioned
contacts?
Enhanced - Does service history indicate previously cleaned/enhanced
contacts?
Battery Voltage - Measured voltage of battery currently in the key
Optional Case Information:
Driving Frequency- How many times a day, on average, does the customer
get in and out of their vehicle? Do they get in and out
20 times, 2 times, 8 times?
Ride length - What is the average drive length per drive cycle? This is
important because the KG system pings the keys every
5km for 20km - for a total of 5 times per drive cycle
max.
Driving habits - Where does the customer keep their key when driving?
Parking Habits - Where does the customer park their car? Do they lock it?
Do they keep the key in the vehicle overnight?
When creating the case, please use the symptom string > Overall vehicle > Safety and locking system > Locks/locking/Remote closing mechanism >
Discharged battery.
After creating a case, please proceed according to the following applicable scenario:
Scenario 1 - The key battery has never been replaced.
Please perform the following actions:
^ Tension the battery contacts (both center and side)
^ Clean the contacts using contact cleaner A 008 989 55 71 (both center and side)
^ Replace the battery with Mercedes-Benz part number A 000 828 03 88
^ Measure voltage of replacement key battery
Scenario 1 case closure - indicate the following per outgoing complaint associated key:
^ Key number
^ Key battery was replaced
^ Brand of replacement battery
^ Contacts tensioned and cleaned
^ Measured voltage of replacement key battery
Note:
Cases submitted without incoming and outgoing key information, per key claimed, will have their corresponding warranty claims denied.
Mercedes-Benz A220 2020 Page 465
Scenario 2 - Repeat complaint for this particular key number, key battery has been previously replaced and any of the following were not completed
(according to service history):
^ Tension the battery contacts (both center and side)
^ Clean the contacts using contact cleaner A008 989 55 71 (both center and side)
^ Installation of Mercedes-Benz sourced battery (part number A 000 828 03 88)
Please perform the following actions:
^ Replace the battery with Mercedes-Benz part number A 000 828 03 88
^ Tension the battery contacts (both center and side)
^ Clean the contacts using contact cleaner A 008 989 55 71 (both center and side)
^ Measure voltage of replacement key battery
Scenario 2 case closure - indicate the following per outgoing complaint associated key:
^ Key number
^ Key battery was replaced
^ Contacts tensioned and cleaned
^ Brand of replacement battery
^ Measured voltage of replacement battery
Note:
Cases submitted without incoming and outgoing key information, per key claimed, will have their corresponding warranty claims denied.
Scenario 3 - Repeat complaint for this particular key number, key battery has been previously replaced and all of the following were completed
(according to service history):
^ Tension the battery contact
^ Clean the contacts using contact cleaner A008 989 55 71
^ Installation of Mercedes-Benz sourced battery (part number A 000 828 03 88)
Please perform the following actions:
^ Open DTS case and follow the instructions received from Dealer Technical Support.
Scenario 3 case closure - indicate the following per outgoing key.
^ Key number
^ Key battery or key was replaced
^ Contacts tensioned and cleaned
^ Brand of replacement battery or brand of battery in replacement key
^ Measured voltage of replacement battery or battery in replacement key
NOTE:
Cases submitted without incoming and outgoing key information, per key claimed, will have their corresponding warranty claims denied.
Mercedes-Benz A220 2020 Page 466
