GL Class (X166) 2013-2015 after facelift became GLS (X166)

Water leaking from driver side sunroof

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Old Jun 5, 2021 | 09:32 AM
  #1  
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1992 500E
Water leaking from driver side sunroof

I have a 2015 GL450 and recently whenever it rains the driver side A-pillar gets wet. Does anyone know how to clean the drain on these cars?

Thanks,
Arif
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Old Jun 5, 2021 | 10:23 AM
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07 C280 4matic, 2014 GL450, 91 VW Vanagon
Open the roof, find the drain holes and blow air down through there. Turn the air pressure way down, you don't don't want to be blowing lines apart. If you don't have access to shop air, try keyboard dusting air out of a can. Try to seal the wand in the drain hole with a wet paper towel to force the air pressure down the drain. Once you think you have it opened, take a 1/2 cup or water or so and pour it down there. It should drain out under the car. I don't know if it will work, but nothing ventured, nothing gained.

PS: Free advise is worth exactly what you paid for it. Good Luck
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Old Jun 5, 2021 | 12:36 PM
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1992 500E
Originally Posted by acetaylor
Open the roof, find the drain holes and blow air down through there. Turn the air pressure way down, you don't don't want to be blowing lines apart. If you don't have access to shop air, try keyboard dusting air out of a can. Try to seal the wand in the drain hole with a wet paper towel to force the air pressure down the drain. Once you think you have it opened, take a 1/2 cup or water or so and pour it down there. It should drain out under the car. I don't know if it will work, but nothing ventured, nothing gained.

PS: Free advise is worth exactly what you paid for it. Good Luck
While I appreciate the reply, I’m looking for information specific to this chassis. You’re absolutely right about not using high air pressure in the roof drainage tubes as sometimes the high pressure can lead to blowing off the rubber drain caps. For instance in the x163, that would result in water draining inside the cabin because good ‘ol Mercedes glued a rubber elbow between the cabin side wall with a short rubber pipe draining out.

In the case of the GL, my understanding is that the end cap typically gets blocked requiring cleaning. I’m new to this chassis type and want to know how to best gain access to it without removing body panels.



Thanks!

Last edited by arifk; Jun 5, 2021 at 12:38 PM.
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Old Jun 5, 2021 | 02:06 PM
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2017 GLE350 4MATIC
Please post your VIN.
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Old Jun 8, 2021 | 12:50 AM
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1992 500E
Hi @chassis,

Here is the data card for my vehicle, hope this helps:

CarID 0
Brand MERCEDES-BENZ
Model 166.864
Name GL 450 4MATIC

Date 20.08.2014
Actual
KolCount 0
KolComment
Market North America
Description GLS - Sport
VehicleClass Passanger
Aggregates M - engine: 276821 30 092499 276.821 M276 DE30LA GASOLINE ENGINE V6 M276 DE30LA GA - Automatic : 722904 10 186901 722.904 W 7 C 700 (NICHT FUER / NOT FOR VAN/G-CLASS) 7-SPEED А W7C700 NOT FOR G-ClassА

Chassis
Sales designation: GL 450 4MATIC
Delivery date: 01 09 2014
Market: NA,North America
Production order: N
Paint code 1:
890U CAVANSITE BLUE METALLIC FINISH
Equipment:
105A IMITATION LEATHER - BEIGE
Engine no.:
276821 30 092499
Major assembly variant: A 276 010 93 11
Part var. design.: 27682130
Text
F166/F292+(494/835)
Transmission:
722904 10 186901 [transmissionType = GA]
Steering:
Front axle 1:
Rear axle 1:
Rear axle 2:
Battery 1:
Fuel cell 1:
Electric motor 1:
SA code
07A OIL OFFSET AMOUNT +700 ML OIL
100A IMITATION LEATHER
105A IMITATION LEATHER - BEIGE
182 CONVERTER WITH DEV. CHARACTERISTIC
1U7 FOGGING SENSOR
212B OP. INSTRUCT. AND MAINT. BOOKLET-ENGL. FOR USA/CAN
22P TRACK PACKAGE
232 GARAGE DOOR OPENER WITH 284 - 390 MHZ FREQUENCY
234 BLIND SPOT ASSISTANT
235 ACTIVE PARK ASSIST
242 ELECTRICALLY ADJUSTABLE RIGHT DRIVER SEAT W MEMORY
249 INTERIOR AND EXTERIOR MIRROR,AUTOMATICALLY DIMMING
258 COLLIS.WARN. SYS. W/ ACTIVE BRAKE INTERV. FCW STOP
264 LICENSE PLATE ATTACHMENT AMERICA
275 MEMORY PACKAGE (DRIVER SEAT, STRG. COL., MIRROR)
280 LEATHER STEERING WHEEL AND LEATHER GEAR SHIFT KNOB
284B AIRBAG LABEL - ENGLISH FOR USA
293 SIDEBAG IN REAR LEFT AND RIGHT
294 KNEE AIRBAG
301 ASHTRAY PACKAGE
311 CUP HOLDER, TEMPERATURE-CONTROLLED
342B INSTRUMENT CLUSTER/HU LANGUAGE - AMERICAN
348 EMERGENCY CALL/SUPPORT SYSTEM
35A VGS D4-0, D3 PATTERN
413 PANORAMIC SLIDING SUNROOF/GLASS SUNROOF
427 AUTOMATIC TRANSMISSION 7-SPEED
441 VITAL SENSOR ON STEERING WHEEL
461 INSTRUMENT WITH MILES IND. AND ENGLISH LEGEND
475 TIRE PRESSURE CONTROL
476 AUTOMATIC LANE RECOGNITION
489 AIRMATIC DUAL CONTROL / AIR SUSPENSION SEMI-ACTIVE
494 U.S. VERSION
500 ELECTRIC FOLDING OUTSIDE MIRROR
501
502 3 YEARS OF MAP UPDATES FREE OF CHARGE
50R 20" LIGHT ALLOY WHEEL 10-SPOKE DESIGN ALL-ROUND
518 UNIVERSAL COMMUNICATIONS INTERFACE (UCI)
527 COMAND DVD APS WITH NAVIGATION
536 SIRIUS SATELLITE RADIO COMPLETE SYSTEM
543 SUN VISOR WITH ADDITIONAL FUNCTION
550 TRAILER COUPLING
551 BASIC ANTITHEFT ALARM SYSTEM (ATA)
55U ROOF INTERIOR TRIM BEIGE FABRIC
581 AUTOMATIC CLIMATE CONTROL
582 AIR CONDITIONER IN THE REAR
636 DELETION - WARNING TRIANGLE
666 PRODUCT PROT.F.TRANSPORT VEH. W/O TIE-DOWN HOOKS
690 EMERGENCY SPARE TIRE (MINI SPARE)
6P5 STEUERCODE VERTRIEB FUER CODE 475 ANFORDERUNG
705L UNITED STATES (USA)
723 TRUNK COVERING
734 TRIM PIECES - WOOD EUCALYPTUS
763 RADIO REMOTE CONTROL WITH PANIC SWITCH (315 MHZ)
7XXL NORTH AND SOUTH AMERICA
805 YOM 14/1
810 PREMIUM SOUND SYSTEM
840 DARK TINTED GLASS
843 ELECTRIC FOLDING 2ND SEAT ROW
845 THIRD SEAT ROW, ELECTRICALLY FOLDABLE
846 SCUFF PLATE IN ALU-APPEARANCE WITH RUBBER STUDS
848 ELEC. SIDE WINDOWS
866 PREINSTALLATION FOR REAR ENTERTAINMENT
873 SEAT HEATER FOR LEFT AND RIGHT FRONT SEATS
876 INTERIOR LIGHT ASSEMBLY
889 KEYLESS - GO
890 AUTOMATIC REAR-END DOOR
890U CAVANSITE BLUE METALLIC FINISH
986 DEVIATING VIN WITH MODEL YEAR
989 IDENTIFICATION LABEL UNDER WINDSHIELD
A05 TRANSMISSION ALL-WHEEL CAPABLE
A20 DIRECT START
A21 SHIFT BY WIRE
A59 FE TORQUE CONVERTER HOUSING 13.5
A65 FE CONVERTER 13.5 MM
A89 REDUCED-FRICTION
A98 TRANSMISSION SOFTWARE RETROFIT
B03 DIRECT START / ECO START/STOP FUNCTION
B12 WHEEL REPLACEMENT TOOL
B16 EXHAUST TIP
F166 SERIES 166
FV SEDAN ELONGATED
G904 TRANSMISSION CODE VERSION 04
GA AUTOMATIC TRANSMISSION
HA REAR AXLE
J58 RIGHT BRACKET
J8A DSM STAR1 FBS4 REMOTE STARTABLE
K15 CONTROL CODE FOR SERVICE INTERVAL 15000 KM
L LEFT-HAND STEERING
M002 ENGINES WITH EXH.TURBOCHARGER WITH INTERCOOLER
M016 PERFORMANCE ENHANCED ENGINE
M276 V6-GASOLINE ENGINE M276
M30 DISPLACEMENT 3.0 LITER
P44 PARKING PACKAGE
P49 MIRRORS PACKAGE
P64 FRONT MEMORY PACKAGE
R02 ALL SEASON TYRES
U10 FRONT PASSENGER SEAT WITH WEIGHT SENSING
U12 FLOOR MATS - VELOUR
U22 LUMBAR SUPPORT ADJUSTMENT
U71 DVD PLAYER WITH REGIONAL CODE 1, USA
U80 115 V SOCKET
V71 SPEED- + LOADINDEX 109H
VL FRONT AXLE HALF, LEFT
VR FRONT AXLE HALF, RIGHT
890U CAVANSITE BLUE METALLIC FINISH
105A IMITATION LEATHER - BEIGE
M276 V6-GASOLINE ENGINE M276
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