FILE: SERVICE: GROUP 00 OF SERVICE INFORMATION BINDER PARTS: GROUP I OF INFORMATION _ PARTS & ACCESSORIES BINDER

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1 FILE: SERVICE: GROUP 00 OF SERVICE INFORMATION BINDER PARTS: GROUP I OF INFORMATION _ PARTS & ACCESSORIES BINDER Campaign No , February 2007 Revision History Revision Date Purpose D 02/02/07 Addition of 4,696 affected vehicles including new model C 01/12/07 Update to warranty information repair 3 B 12/16/06 Update to work instructions A 12/08/06 Update to work instructions and warranty information - 12/01/06 Initial issue TO: ALL MERCEDES-BENZ CENTERS SUBJECT: MODEL 171, MODEL YEAR MODEL 203, MODEL YEAR MODELS 209, 211, MODEL YEAR 2006 CHECK ENGINE CONTROL MODULE SOFTWARE VERSION AND UPDATE IF NECESSARY (272 ENGINE) This Service Campaign has been initiated because DCAG has determined that on the affected vehicles (see VIN range on the following page) the software for the engine control unit needs to be upgraded to correct a potential malfunction which could lead to an incorrect fuel/air mixture at low ambient temperatures. Under certain conditions, this can have a negative effect on starting the engine. Please review the Effective Serial Number chart located on the following page. Attached is a sample copy of a letter which owners of the affected vehicles will receive. Prior to performing this Service Campaign: Please check VMI to insure the vehicle is involved and to determine if the vehicle has been previously repaired. Please review the entire Service Campaign bulletin. Approximately 67,471 vehicles are affected. Order No. This bulletin has been created and maintained in accordance with MBUSA-SLP S423QH001, Document and Data Control, and MBUSA-SLP S424HH001, Control of Quality Records.

2 2 Effective Serial Number Range Models Chassis End Number From To F F F F A A F F F F F F F F F F F F T T A A X X A A X X Every vehicle in the VIN range may not be included in the campaign. VMI must always be checked before performing campaigns to verify that the campaign is required on a specific vehicle. VMI always overrides the bulletin in reference to a specific vehicle's inclusion in a particular campaign. Please also note that Recall and Service Campaigns do not expire and may also be performed on a vehicle with a vehicle status indicator.

3 3 Procedure A. CHECK VERSION OF ENGINE CONTROL MODULE SOFTWARE Note Prior to starting the procedure ensure to: Use DAS version 10/2006 with all AddOns or 11/2006 with all AddOns (including ) Follow the steps exactly as described in DAS Connect battery charger 1. Connect Star Diagnosis. 2. Check version of engine control module software. Follow the DAS path Control units/ Drive/ ME 9.7- Motor electronics 9.7/ Control unit version. 3. Perform one of the following: Model 280 in model series 171, 203: If software version is M272_KE_VC7/ VC8/ VC9, proceed to Subject B. Model 350 in model series 171, 203, 209, 211: If software version is M272_KE_VC6/ VC7, proceed to Subject B. If software version is not one of the above versions: Disconnect Star Diagnosis; this campaign has been completed. B. INSTALL ENGINE CONTROL MODULE SOFTWARE; VEHICLES WITH M272_KE_VC6: ALSO INSTALL TRANSMISSION CONTROL MODULE SOFTWARE 1. Install engine control module software. Follow the DAS path Control unit adaptations/ Control unit programming and on-screen instructions. If the No newer control module software was found message appears when attempting to flash the control module, proceed to step 3 (vehicles with M272_KE_VC6 only) or step 4 (all other vehicles). 2. Perform SCN coding of engine control module. Follow the DAS path Initial startup and on-screen instructions. 3. Vehicles with M272_KE_VC6 only: Install and code transmission control module software. Install: Follow the DAS path Control unit adaptations/ Control unit programming and on-screen instructions. SCN coding: Follow the DAS path Initial startup and on-screen instructions. If the No newer control module software was found message appears when attempting to flash the control module, proceed to step 4.

4 4 4. Disconnect Star Diagnosis. In rare instances when flashing the ME9.7 the flash can fail due to network communications traffic on the Engine CAN, leaving the ME9.7 in Bootloader mode. If this flash failure occurs, simply pull the fuse(s) for the ESP Control Module and restart the ME9.7 Flash. Removing the fuse(s) stops the communication of the ESP Control Module and therefore reduces the communications traffic. The following allowable labor operation should be used when submitting a warranty claim for this repair: Warranty Information Repair 1 (Check only) Operation: Battery Charger, Connect (with SDS Connected) ( ) Star Diagnosis System (SDS), Connect & Disconnect ( ) Engine Control Unit Software, Check (with DAS Connected) ( ) Damage Code Operation Number Labor Time (hrs.) Model Indicator(s) Q7, Q8, Q9, QA, S7, S8, Q7, Q8, Q9, QA, S7, S8, Q7, Q8, Q9, QA, S7, S8, Repair 2 (Check and install engine control module software) Operation: Battery Charger, Connect (with SDS Connected) ( ) Star Diagnosis System (SDS), Connect & Disconnect ( ) Engine Control Unit Software, Check (with DAS Connected) ( ) Engine Control Unit Software, Install (after Check) ( ) Control Unit (with SDS Connected), Code ( ) Damage Code Operation Number Labor Time (hrs.) Model Indicator(s) Q7, Q8, Q9, QA, S7, S8, Q7, Q8, Q9, QA, S7, S8, Q7, Q8, Q9, QA, S7, S8, Q7, Q8, Q9, QA, S7, S8, S7, S8, T7, T8, U6, U7, X1, X3 0.2 Q7, Q8, Q9, QA

5 5 Repair 3 (Check and install engine and transmission control module software vehicles with M272_KE_VC6 only) Operation: Battery Charger, Connect (with SDS Connected) ( ) Star Diagnosis System (SDS), Connect & Disconnect ( ) Engine Control Unit Software, Check (with DAS Connected) ( ) Engine Control Unit Software, Install (after Check) ( ) Control Unit (with SDS Connected), Code ( ) Transmission Control Unit Software, Install (with DAS Connected) ( ) Control Unit (with SDS Connected), Code ( ) Damage Code Operation Number Labor Time (hrs.) Model Indicator(s) Q9, QA, S7, S8, T7, T8, Q9, QA, S7, S8, T7, T8, Q9, QA, S7, S8, T7, T8, Q9, QA, S7, S8, T7, T8, S7, S8, T7, T8, U6, U7, X1 0.2 Q9, QA Q9, QA, S7, S8, T7, T8, S7, S8, T7, T8, U6, U7, X1 0.2 Q9, QA

6 6 Service Campaign February, 2007 Dear Mercedes-Benz Owner, This notice is sent to you requesting that you bring your vehicle to your Mercedes-Benz dealer as soon as possible. In our continuing efforts to assure the proper performance of Mercedes-Benz products and to ensure the satisfaction of our customers, Mercedes-Benz USA, LLC has initiated a Service Campaign for certain Model Year SLK-Class, C-Class, CLK-Class, and E-Class vehicles. Our records indicate that your vehicle is included in the population of affected vehicles. DaimlerChrysler AG (DCAG), the manufacturer of Mercedes-Benz vehicles, has determined that the software for the engine control unit needs to be upgraded to correct a potential malfunction which could lead to an incorrect fuel/air mixture during low outside temperatures. Under certain conditions, this can have a negative effect in starting the engine. As a precautionary measure, this Service Campaign will address this issue by upgrading the engine control unit software. This measure will be performed at no charge. This Service Campaign does not cover any other components, to which standard warranty terms and exclusions apply. Your authorized Mercedes-Benz dealer is available to provide this service, free of charge. The working time required is approximately one hour. As a matter of normal service process, your authorized Mercedes-Benz dealer will also check for other repair measures which might be applicable to your vehicle and this may increase the required working time. Please contact your authorized Mercedes-Benz dealer schedule an appointment at your earliest convenience. Please mention Service Campaign # If you are no longer the vehicle owner, or had a change of address, please complete the reverse side of this letter and return the complete letter in the enclosed envelope. If this is a leased vehicle and the lessor and registered owner receives this notice, please forward this information by first class mail to the lessee. Please contact your authorized Mercedes-Benz dealer should you have any questions or encounter any difficulty regarding this program. If your dealer is unable to remedy your situation, or is unable to perform this service without charge, please call FOR-MERCedes ( ). We hope that you are enjoying your Mercedes-Benz and we apologize for any inconvenience you may experience as a result of this issue. Sincerely,