2006 Mercedes Benz GL550

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 11009122Complaint Washer fluid system leaks Cause Various possible causes: 1. Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump. 3.1. Distributor housing leaks. 3.2. Pump fitting leaks. 3.3. Washer fluid hose cannot be snapped into place on pump fitting. 3.4. Washer fluid hose will not stay on pump fitting, although connector OK. 4. Washer fluid line. 4.1 Connector will not stay on pump fitting because it is broken. 4.2 Sealing ring in connector missing. 4.3 Sealing ring in connector fitted, but deformed and therefore leaks. 4.4 Damage to washer line by animal. 5. Seal on heating washer fluid reservoir/washer fluid reservoir. Remedy Replace defective component parts only. Do not replace any adjacent component parts that are intact. Note: Repair kits for washer line hoses do exist to allow patches for line damage.
• 11008091Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing Remedy 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: It is recommended to replace the cover caps. The non-woven cloth in the cover cap protects the microphone from soiling and must not be removed. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicles warranty in any way.
• 11007974Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy In advance, observe LI82.10-P-078301 "Headlamps or Front Fog Lamps Leaking or Fogged". 1. Prepare headlamp/check for external damage: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: A headlamp with external damage is not a warranty or goodwill case. 2. Leak test of headlamp with overpressure: Connect test adapter to pressure tester. (Figure 1) Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. Seal all the outlet openings using sealing compound and the given diaphragm with the plunger (picture 3). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged. If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is not leaky and the problem is down to natural physical fogging. If a pressure drop of more than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. Replace any leaky headlamps. Note: Desiccant packs can be installed for headlamps that are not leaky. See: LI82.10-P-064766 Fogged headlamp, desiccant pack installed - open ventilation system LI82.10-P-078304 Fogged headlamp, desiccant pack installed - closed ventilation system
• 11007753Complaint Headlamp or front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. Headlamps comply with all applicable standards. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps and LED rear lamps: 1. Drive vehicle into workshop (temperature higher than +18 C/+64.4 F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in the formation of condensation, check the headlamp for a defect. (See Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Remedy 2 A Damaged headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness in accordance with LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system: LI82.10-P-064766. Closed ventilation system LI82.10-P-078304
• 11005294Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4 F) Note: Do not wash the vehicle or subject it to high-pressure cleaning before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the trunk. 4. Switch on the exterior lighting. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation -> a significant reduction in the formation of condensation must be clearly recognizable (defogging progress).
• 10248162Crease formation on genuine leather seat covers in vehicles with low mileage Objects left on the seats for extended periods of time (pressure marks). Objects wedged between the seat backrest and seat cushion (e.g. seat belt buckle). Light initial creases due to vehicle handling. Light creases in the outer covers originating from the production process (missing finish). Heat treatment of the seat covers using heat gun and plastic wedge. Be very careful to not overheat the seat material!
• 10205147Ticking or pulsing noise from high-pressure pump and/or fuel injectors.
• 10167564Customer experiences low battery conditions, resulting in jump starts, and eventually requiring battery replacement.
• 10167563The COMAND unit does not start or the COMAND display remains dark. The COMAND unit cannot be operated. Note: The problem disappears after a lengthy idle period (>6h) or after interrupting the power supply (circuit 30).
• 10167546FC 2783 (Friction power of torque converter lockup clutch is too high) or FC 0741 (Actuation of torque converter lockup clutch not possible) stored in transmission control unit. One possible additional customer complaint could be "poor acceleration" e.g. due to engine intervention. This can affect all NAT2FE+ (7G-TRONIC PLUS) vehicles with engines OM651, OM642LS and M278 in the production period from 04/2011 to 02/2012 and with more than 10,000 km. The two fault codes can also occur in combination with rpm sensor faults (see also GI27.50-P-035556). The rpm sensor fault is not connected with this complaint.
• 10166988Collision Prevention Assist (CPA) may warn for no obvious reason (optical and/or acoustic warning message).
• 10166976Message in instrument cluster "DISTRONIC PLUSCurrently Unavailable - See Owner's Manual"
• 10166975This Customer 1 Action has been initiated because certain mbrace subscribers were recently contacted by mbrace informing them that they need to have an i-button call performed to ensure their mbrace device has registered with the Verizon Telematics systems. If the i-button call failed or if the customer was unable to perform the i-button call, the mbrace agent instructed the customer to make an appointment with their dealer to have the issue corrected and/or i-button call performed. The vehicles impacted range from model year 2002 to 2014.
• 10166097Electric motor for the folding rear backrest of the 3rd seat row is inoperative or makes noises during adjustment
• 10166096The release loop of the Easy Entry seat in the 2nd seat row is awkward to operate as it is difficult to access
• 10135716Headlamp lights up sporadically
• 101356252nd seat row Power Easy Entry function impairment of backrest folding
• 10059536Summary to be provided on a future date.
• 10037985Mercedes-benz: the load compartment roller blind has catch bolts loose or broken from improper force when using.
• 10037408Mercedes-benz: shock absorber procedure.
• 10034152Mercedes: battery symbol and service required (in white). Fault message IS displayed if the charge level IS too low or the park pawl additional battery IS defective. In addition fault code fc 9061 and/or fc 9062 IS stored in the front sam.
• 10033071Mercedes benz: adjusting wiper arms. If you receive reports on certain vehicles of wipers chattering/noisy, proceed as follows: inspect wiper blades/inserts for wear and replace; thoroughly clean windshield; verify use of correct washer fluid; check washer nozzle adjustment; check wiper arm angle adjustment; and record values per applicable model; if required, adjust wiper arm angle. Models 164/251. No model years listed.
• 10033070Xentry (mercedes): engine warning lamp IS currently on or was on and a delay fault of the camshaft adjust to current or stored in the engine control unit. Models 171, 203, 209, 211, 219, 221, 216, 230, 164, 251, and 403. No model years listed.
• 10032727Mercedes: following fault codes are entered in the control unit and displayed-fc5320 drain valve:open circuit or insufficient valve current in models series 211, 219; fc5260 drain valve open circuit or insufficient valve current in model 221; fc5250 drain open circuit or insufficient valve current in model series 251, 164. Defective connecting cables to drain valve at airmatic compressor. This results in the setting of the fault codes. No model years listed.
• 10032568Mercedes benz service campaign: see document search button for owner letter. Software calibration number (scn) coding; engine control module. The vehicles fuel tank leak diagnosis system may have been inadvertently deactivated during a visit to the workshop. This may cause the affected vehicles to fail to meet the statutory requirements for inspection and or maintenance (emissions inspection).
• 10028686Mercedes: air matic visit workshop displayed within instrument cluster. Models 164, 211, 219, 221 and 251. Included 4matic, AMG (compressor) AMG, bluetec and wagon. Model years unknown. Updated 9/18/09.
• 10028664Mercedes: a nonfunctional blower motor (blower motor runs continuously) or water drops in front passenger footwell after engine wash. Caused by an insufficient sealing of air/water box when water IS used when engine compartment IS cleaned near right side of firewall.
• 10028646Mercedes: groaning or dull, heavy cracking noises from steering shaft area. When turning steering wheel or moving off or braking. This may be emanating from the bearing and housing of upper steering shaft (firewall pivot point) or steering coupling (lower steering shaft). Models 164 and 251. Model years unknown.
• 10028645Mercedes: chrome plating peeling on decorative caps on the steering wheel spokes, this IS due to less than optimal adhesion between chrome plating and base material. Models 164 and 251. Model years unknown.
• 10028024Mercedes: check air suspension compressor and replace if necessary. Insufficient air pressure in the air suspension system may result from damage to the pressure disk in the air suspension compressor.
• 10027950Mercedes: right side second row seat fold up mechanism not working correctly or inoperative; right side second row seat red release strap inoperative. Model years unknown.
• 10025648Rattling/thumping noise on rough roads and/or knocking noise when moving steering in both directions on all model 164 and 251 vehicles. Model years unknown.
• 10025647Water entry into vehicle interior for all model 164 vehicles.
• 10024091Model ml350, ml500, ML63, ml320, ml550, gl450, gl320, gl550 4 matic -- equipped with sales code 477 - tire loss warning system (indirect esp based) with run flat tires -- model year 2005 to 2007 (tire pressure monitoring inactive) displayed in instrument cluster.
• 10023784Models E320, E500, E55, E350, E550, E63, ml350, ml500, ML63, ml320, ml550, gl450, gl320, gl550 with diesel engine om 642 my 2006-2007 -- update engine control module software.
• 10023491Mercedes-benz - procedure for replacing fuel pump and fuel filter modules . Models ML63, ml320, ml350, ml500, ml550, gl320, gl450, gl550, R63, R320, R350, R500. Model year all.
• 10023371Mercedes-benz models with mechanical mirrors - lubricate folding mechanism of right and left outside mirrors.
• 10022893Check engine light on / fault codes fc1200 / fc1208 stored in me-sfi control unit. Mercedes-benz model C230, C280, C350, slk280, slk350, clk350, clk550, E350, E550, cls550, S600, and sl550. Equipped with M272 engine or M273 engine. Updated 8/28/08.
• 10020460Play in the rack and pinion steering system. Models 203, 209, 210, 211, 215, 220, 230. Mercedes benz. Updated 5/13/09.

Every Mercedes Benz GL550 model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.