NHTSA ID Number: 10177572
Manufacturer Communication Number: LI82.10-P-063240
TSB/Document Date: 2020-07-27
Summary
Lamp unit fogged or droplets forming. Because of the housing cover with pressure compensation membrane, the lamp unit is a ?closed system?. This means that the lamp unit is protected against acid gases, dirt and exhaust gas. However, moisture can still enter from two sources. Through absorption and desorption (the commonest cause) or through permeation. Moisture is either absorbed by the plastic material and, when the light source is switched on, it is released from the plastic by desorption, or the moisture penetrates through the plastic materials of the headlamp from outside (permeation). This can lead to the formation of condensation on the lens of the headlamp.
Headlamps fogged
Topic number
LI82.10-P-063240
Version
7
Function group
82.10 Exterior lights
Date
06-15-2020
Validity
Model series 117, model series 176 with SA code: 631,
632
Model series 212 SA code: 640, 641, 642
X253, X156, model series 213 and 238 with SA code:
631, 632, 640, 641, 642
Model series 231 with SA code 640, 641, 642
Model series 177, 247 with SA code: 631, 632, 640, 641,
642
Reason for change
Assignment of part numbers for BR 177 and 247
Reason for block
Complaint:
Lamp unit fogged or droplets forming
Cause:
Because of the housing cover with pressure compensation membrane, the lamp unit is a “closed system”.
This means that the lamp unit is protected against acid gases, dirt and exhaust gas.
However, moisture can still enter from two sources. Through absorption and desorption (the commonest cause) or
through permeation.
Moisture is either absorbed by the plastic material and, when the light source is switched on, it is released from the
plastic by desorption, or the moisture penetrates through the plastic materials of the headlamp from outside (permeation). This can lead to the formation of condensation on the lens of the headlamp.
Remedy:
Check housing cover of lamp unit for natural fogging or dew as per GI82.10-P-009047.
If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated.
1.
Remove lamp unit
2.
Cut open housing of lamp unit on inside of bar (picture 01), along the notch ( red dotted line in picture_03) using
hot knife (WS82.00-P-0026B).
Make sure that the outer edge is not damaged during the cutting process.
Note: Risk of injury from burns to skin and eyes, risk of poisoning from inhaling vapors when working with plastics.
3.
Place desiccant pack in new service cover and bolt down (Figure 02)
4.
Stick existing transparent membrane onto surface provided
Note: The bonding surface must be clean and dry.
5.
Attach service cover with desiccant pack to headlamp
6.
If the headlamp housing has an additional 2nd membrane, this must be covered over with the masking tape.
Note: The bonding surface must be clean and dry.
7.
Reinstall lamp unit
.
To ensure that the drying pack (absorption) acts effectively, the headlamp has to be air-sealed.
06-15-2020 8:41 PM
© Copyright Mercedes-Benz
AG
RUTHERE
Page 1/5
Observe or check the following points for this:
1. The seals on the central connector must all be present [Picture 5 (1)] and correctly fitted [Picture 5 (2)].
2. The new transparent diaphragm must be correctly bonded [Picture 6].
3. Check headlamp housing for any external damage.
Attachments
File
Description
Bild_02.jpg
1) Service cover for desiccant pack
2) Desiccant pack
3) Threaded connection
Bild_01.jpg
Lamp unit, model series 212
Bild 5.jpg
1) Seals missing
2) Seals not correctly fitted
Bild 6.jpg
Transparent diaphragm correctly or incorrectly bonded.
Bild 3.jpg
Cutting edge
Symptoms
Lighting / Exterior lights / Driving lights / Main headlamps / Fogged
Parts
Part number
ES1 ES2 Designation
Quantity Note
EPC
A 000 826 16 00
11
Desiccant pack (20g)
1
One desiccant pack per headlamp
X
A 000 826 10 00
Large service cover
1
For BR 212, 177 and 247
X
A 000 826 09 00
Small service cover
1
For model series 156 - 176 - 117 213 - X253 - 231M
X
A 000 826 20 00
1
Masking tape for the existing 2nd
membrane (on headlamp housing)
X
Attachments
06-15-2020 8:41 PM
© Copyright Mercedes-Benz AG
RUTHERE
Page 2/5
Bild_02.jpg:
Bild_01.jpg:
06-15-2020 8:41 PM
© Copyright Mercedes-Benz AG
RUTHERE
Page 3/5
Bild 5.jpg:
Bild 6.jpg:
06-15-2020 8:41 PM
© Copyright Mercedes-Benz AG
RUTHERE
Page 4/5
Bild 3.jpg:
06-15-2020 8:41 PM
© Copyright Mercedes-Benz AG
RUTHERE
Page 5/5
- 💯【Conta.ct us for Support Directly】If you met any...
- 🔥🔥🔥【2026 AUTEL FLAGSHIP MK900BT MK900-BT, NEW...
- 🚗【3000+ ACTIVE TESTS (50➡3000+), SAME AS MS...
- 🚗【40+ HOT SERVICES FOR 150 MAKES (28+➡40+)】Full...
- 🚗【OE ALL SYSTEM DIAGNOSE, AUTO SCAN 2.0: SCAN LICENSE...
- 【TURN OFF CEL】 This AL319 car scanner diagnostic tool...
- 【EXTENSIVE APPLICATION】 Autel AL319 Compatible with...
- 【FOR END USER & DIYERS】 This error code reader AL319 is...
- 【USER-FRIENDLY DESIGN】 This OBD2 scanner and check...
- 【HIGH-QUALITY SERVICES】 12 months war.ranty from the...
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: LI82.10-P-063240
Replacement Service Bulletin Number:
MFR Communication Date: 2020-06-30
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- 2026 ALL-IN-ONE HEAVY DUTY TRUCK SCANNER – BUILT FOR DIESEL DIAGNOSTICS：The ANCEL X7HD PRO combines full-system diagnostics, bi-directional control, ECU coding, HDOBD/OBD2 functions, and 42+ reset services in one powerful heavy duty truck scanner. This diesel scan tool helps technicians, fleet owners, and repair shops diagnose problems faster, reduce downtime, and complete more repairs without switching between multiple truck diagnostic tools. Features a 10.1" Android tablet, Bluetooth & Wi-Fi, live data graphing, and 2 years of f-ree updates
- 42+ RESET FUNCTIONS – MORE THAN A BASIC TRUCK CODE READER：Perform essential service functions including forced DPF regeneration, injector coding, speed limiter adjustment, idle adjustment, oil reset, ABS reset, SRS reset, EPB reset, throttle reset, and suspension calibration. Designed for real truck maintenance and fleet service, this commercial truck diagnostic scanner helps reduce dealer visits, avoid unnecessary downtime, and handle more repair jobs with one diesel diagnostic tool
- ACTIVE TEST & ECU CODING – ADVANCED BIDIRECTIONAL SCAN TOOL FOR TRUCKS：Quickly locate faults by activating components and sending commands directly to vehicle systems. Test injectors, ABS, throttle, cooling systems, and other modules in real time without unnecessary disassembly. ECU coding and module matching help adapt replacement parts, restore factory settings, and reduce repeat repairs, making this semi truck scan tool ideal for advanced troubleshooting and daily shop work
- FULL-SYSTEM HDOBD/OBD2 DIAGNOSTICS – WIDE TRUCK & ENGINE COVERAGE：Read and clear codes, monitor live data, freeze frame, and diagnose engine, transmission, ABS, body, and other major systems. Compatible with Freightliner
, Kenworth, Peterbilt, Volvo, Mack, International, and other commercial truck brands, plus Cummins, Caterpillar, Detroit, Paccar, and Navistar diesel engines. Also supports full OBD2/EOBD diagnostics for standard vehicles, making it a versatile truck obd2 scanner for mixed fleets and repair shops - PROFESSIONAL HARDWARE + RELIABLE SUPPORT – BUILT FOR DAILY SHOP USE：This professional diesel diagnostic computer features a 10.1" touchscreen, Android 10.0 system, 6000mAh battery, Bluetooth/Wi-Fi connectivity, and built-in front & rear cameras for documenting repairs and remote troubleshooting. Includes 2 years of fr-ee updates, 1-year w-arranty, and responsive technical support. Contact [email protected] before purchase to confirm compatibility and supported functions for your truck or diesel engine
- 【Built for Heavy Duty Diesel Diagnostics】Designed for SAE J1939 and J1708 compliant trucks, buses, and diesel-powered commercial vehicles. HD601 truck scanner diagnostic tool helps owner-operators, small fleets, mobile technicians, and independent repair shops quickly identify fault codes, view live data, and make informed repair decisions—saving time, reducing downtime, and avoiding unnecessary shop visits
- 【Full System Diagnostics+All HD OBD Modes】The New HD601 heavy duty truck scanner delivers full-system diagnostics on SAE J1939 and J1708-compliant commercial vehicles—digging into engine, transmission, ABS, fuel, every system that keeps your rig rolling. It supports all HD OBD modes, giving you live data, freeze frame, ECU info, vehicle info, emissions data tracking, plus code reading and clearing. Not just what broke, but why—so you fix it right the first time. Pinpoint issues faster, cut repair costs, and spend less time on the shoulder
- 【Wide Heavy-Duty Vehicle Coverage】Supports a wide range of heavy-duty vehicle manufacturers and systems, including Freightliner, Kenworth, Peterbilt, Volvo, International, Detroit, Cummins, Paccar, Allison, Eaton, Bendix, Wabco, and more. Coverage varies by vehicle make, model, year, and system configuration. Contact our support team before purchase if compatibility verification is needed
- 【Speaks Major Truck Protocol】The New HD601 diesel truck scanner is built for American-made trucks—and supports the heavy‑duty protocols you' re most likely to run into on the road: SAE J1939, J1708/J1587, ISO 15765‑4, ISO 14230‑4, ISO 9141‑2, J1850 PWM/VPW, ISO 27145‑4, and EURO‑6. For most trucks, model years, and systems, it speaks the language your vehicle understands. Just plug it in and start diagnosing—no guesswork, no gatekeeping. Note: vehicle functions and module availability may vary by manufacturer and model year
- 【Save Hundreds on Diagnostic Fees】Why pay $150–300 for someone to read your codes? With the New ANCEL heavy duty truck scanner, you can pull fault codes yourself—in minutes, without leaving the truck. One or two uses pays for the tool. After that, every diagnostic is money back in your pocket. Smart investment for owner-operators, techs, and small fleets. Read and clear stored fault codes in minutes. Active fault codes may require repairs before they can be cleared
- 【One Tool, Total Fleet Coverage: 6/9/16 Pin Ready】Featuring an integrated 16-pin OBD2 connector and professional-grade 6-pin & 9-pin adapters, this heavy duty truck scanner provides extensive support for J1939, J1708, J1587, ISO 14230-4, ISO 15765-4 and ISO 9141-2, ISO 27145-4 protocols. It offers reliable diagnostic coverage for major American diesel brands—including Cummins, Paccar, Caterpillar, Detroit, and Freightliner—making it a versatile semi truck scanner for managing any diverse fleet.
- 【2 in 1 Diesel Code Reader & Advanced HD OBDII】Equipped with professional-grade diesel scanner capabilities, the HD301 features intuitive Read/Erase codes and turn off the "Check Engine" light. With the built-in DTC Lookup library, you can instantly access fault code definitions on-device without searching the internet. It also retrieves hundreds of essential live sensor data—such as coolant temperature, fuel pressure, and engine RPM—in a stable text format for precise and rapid troubleshooting. (Please note that the HD301 can not support DPF Regen.)
- 【Full System Truck Diagnostic】The FOXWELL HD301 heavy duty scan tool is engineered to deeply access and scan all available electronic control modules specifically for truck, including Engine, Transmission, ABS, SRS, Chassis, and Body Control. This professional truck scanner diagnostic tool allows you to identify issues across the entire vehicle, ensuring your rig stays in peak condition for the long haul.
- 【Versatile for most big Rigs: Commercial, Passenger & Beyond】Engineered for more than just trucks, this heavy duty scan tool offers extensive coverage for pickups, buses, trailers, and even marine vessels. From construction machinery (excavators, loaders) to agricultural equipment (tractors, harvesters), it provides a true all-in-one diagnostic solution.
- 【Plug-and-Play & No Subscription】Designed for the road! No WiFi, no batteries, and no complex App setup required. Simply plug it into your vehicle’s diagnostic port to start scanning immediately. Enjoy lifetime free software updates to keep your HD301 diesel truck scanner current with the latest vehicle models and features—without any hidden subscription fees—While overcoming language barriers with support for Spanish and English.
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.