2003 Mercedes Benz S430 Trunk

Hello -

I think what you are talking about is discussed in a TSB about your vehicle. I have attached that below if I understand you correctly.

SERVICE CAMPAIGN 2005060009 - CHECK TRUNK LID LOCK AND REPLACE IF NECESSARY
SERVICE CAMPAIGN BULLETIN
Reference Number(s): 2005060009, Date of Issue: July 26, 2005
MERCEDES-BENZ: MODEL 220, MODEL YEAR 2003
GROUP: 00 OF SERVICE INFORMATION BINDER
GROUP: I OF INFORMATION - PARTS & ACCESSORIES BINDER
Related Ref Number(s): 2005060009
ARTICLE BEGINNING
SUBJECT
MODEL 220, MODEL YEAR 2003
CHECK TRUNK LID LOCK AND REPLACE IF NECESSARY
This Service Campaign has been initiated because DCAG has determined that on the affected vehicles (see VIN range below) the button opening the trunk lid supplies a resistance value not defined for the pneumatic control unit (PSE). This can result in the interior bus (CAN-B) being activated continuously resulting in an increased battery drain. The resistance values of the trunk lid lock will be checked and replaced if necessary during this Service Campaign.
Please review the Effective Serial Number chart located below and if necessary repair the subject vehicles during the vehicle's next service.
Prior to performing this Service Campaign:
"Â Please check VMI to insure the vehicle is involved and to determine if the vehicle has been previously repaired.
"Â Please review the entire Service Campaign bulletin.
Approximately 288 vehicles are affected.
EFFECTIVE SERIAL NUMBER RANGE
Models Chassis End Number
From To
220.170 A315456 A317024
220.174 A315006 A316357
220.175 A315329 A317022
220.176 A314851 A316010
220.183 A314934 A314948
220.184 A314939 A316028
PROCEDURE
1. Remove trunk lid panel (1, Fig. 1) from trunk lid:
"Â Remove 4 screws (arrows), remove trunk latch cover.
"Â Unclip trunk lid panel (1) from trunk lid.
"Â Disconnect harness connector from emergency trunk release button (2) and trunk light (if installed in trunk lid panel).
"Â Remove trunk lid panel (1).
Fig. 1: Removing Trunk Lid Panel From Trunk Lid
2. Disconnect wiring harness connector (arrow, Fig. 2) from trunk lid lock connector (1).
3. Remove 3 screws (3, Fig. 2 [3rd screw not shown]) from trunk lid lock mounting bracket, remove bracket (4).
Fig. 2: Wiring Harness Connector
4. Check resistance between the two pins (1, Fig. 3) on the (yellow) trunk lid lock connector (arrow, Fig. 3):
"Â Push Button Actuated : Resistance between the two pins on the yellow connector: < 10 ohms.
"Â Push Button Not Actuated : Resistance between the two pins on the yellow connector: > 1M ohm.
Fig. 3: Trunk Lid Lock Connector Pins
If the values are not within specifications replace the trunk lid lock.
Refer to WIS: AR88.50-P-5020M.
NOTE: Note (regarding WIS: AR88.50-P-5020M ):
"Â Do NOT perform the following steps in the above WIS instructions: 7, 8, 17 - 21 (they do not apply to this procedure).
"Â Step 15.1 does not include instructions on removing/installing lock cylinder, this information is found in WIS: AR88.50-P-5061M.
PARTS INFORMATION
PARTS INFORMATION
Qty. Part Name Part Number
1 Trunk lid handle 220 750 08 93
1 Trunk lid handle (with Keyless Go, code: 889) 220 750 09 93
1 Trunk lid handle (with trunk lid remote control, code 881) 220 750 10 93
1 Trunk lid handle (with trunk lid remote control, code: 881 and Keyless Go) 220 750 11 93
NOTE: "Â Please be aware that only the part number(s) referenced in the Campaign Bulletin is/are approved for use to repair the vehicle. Repairs performed using any other part(s) will not have been performed in accordance with the campaign. Accordingly, warranty claims submitted with reference to an improper part number(s) will be denied.
"Â The following allowable labor operation should be used when submitting a warranty claim for this repair:
WARRANTY INFORMATION
Repair 1 (Check only, no replacement required)
Operation : Trunk lid lock, check (02-3805)
WARRANTY INFORMATION - REPAIR 1
Damage Code Operation Number Labor Time (hrs.) Model Indicator(s)
75 900 32 8 02-3805 0.5 hrs. M1, M2, M6, M7, M8, M9
Repair 2 (Check and replace trunk lid lock)
Operation : Trunk lid lock, check (02-3805)
Trunk lid lock, replace (02-3806)
WARRANTY INFORMATION - REPAIR 2
Damage Code Operation Number Labor Time (hrs.) Model Indicator(s)
75 900 32 7 02-3805 0.5 hrs. M1, M2, M6, M7, M8, M9
02-3806 0.3 hrs. M1, M2, M6, M7, M8, M9

Also, there is a recall on your trunk lid springs and some other things. The dealer may fix these recalls for free. Please contact the dealer service department, give them the VIN number of your car and have them check on these to see if they apply to you.