TSB: MERCEDES BENZ GL350, GL450, GL550, GLE 550E, GLE292 COUPE, GLE300D, GLE350, GLE350D, GLE400, GLE450, GLE550, GLE550E, GLE63S, GLS350D, GLS450, GLS550, GLS580 (2013–2020)

Bulletin LI8330P0646722 — August 17, 2016

Bulletin Details

Bulletin IDLI8330P0646722
ManufacturerMERCEDES BENZ
ModelsGL350, GL450, GL550, GLE 550E, GLE292 COUPE, GLE300D, GLE350, GLE350D, GLE400, GLE450, GLE550, GLE550E, GLE63S, GLS350D, GLS450, GLS550, GLS580
Model Years2013–2020
Date IssuedAugust 17, 2016
Date Added to NHTSADecember 20, 2021
ComponentELECTRICAL SYSTEM
Vehicles Affected44 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

Engine fan runs continuously, a/c inoperable or, engine light illuminates sporadically.

Affected Vehicles

MakeModelYearComponent
MERCEDES-BENZ GLS450 2020 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLS580 2020 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE 550E 2019 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE350 2019 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE400 2019 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLS450 2019 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLS550 2019 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE350 2018 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE400 2018 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE550E 2018 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE63S 2018 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLS450 2018 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLS550 2018 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE300D 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE350 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE400 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE450 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE550 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE550E 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE63S 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLS350D 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLS450 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLS550 2017 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL350 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL450 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL550 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE292 COUPE 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE300D 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE350 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE350D 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE400 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE450 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE550E 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GLE63S 2016 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL350 2015 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL450 2015 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL550 2015 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL350 2014 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL450 2014 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL550 2014 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL350 2013 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL450 2013 110000 ELECTRICAL SYSTEM
MERCEDES-BENZ GL550 2013 110000 ELECTRICAL SYSTEM

Related MERCEDES BENZ Recalls

CampaignModelYearComponentSummary
GLS 450 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...
GLE 580 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...
AMG GLS63 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...
AMG GLE63 S 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...
GLE 450E 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized MERCEDES BENZ dealer. Bring this bulletin ID (LI8330P0646722) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.