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Owner LetterTechnical Service Bulletin # Mercedes Benz Truck GL 550 S-80_61-61A Date: 130404

Owner LetterTechnical Service Bulletin # Mercedes Benz Truck GL 550 S-80_61-61A Date: 130404

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):

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

2011 Mercedes Benz Truck GL 550 (164.886) V8-5.5L (273.963) Page 147

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.

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)

2011 Mercedes Benz Truck GL 550 (164.886) V8-5.5L (273.963) Page 148

^ 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.

Parts Information

In Case of Warranty

2011 Mercedes Benz Truck GL 550 (164.886) V8-5.5L (273.963) Page 149