Fitment notes: AGM battery required for start-stop system; located under hood; 48V mild hybrid system supplemental to 12V battery
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Every control module on the 2024-2026 Mercedes-Benz GLE450 W167 — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
4MATIC Control Unit (4M)3.5 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Transfer case housing, integrated with actuator assembly
🔧 Xentry Diagnostics + SCN online
⚠️ All-wheel drive system. Requires drivetrain adaptation and road test. Transfer case fluid change recommended.
Electric Power Steering Control Unit (EPS)2.8 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Steering column, integrated with steering gear assembly
🔧 Xentry Diagnostics + SCN online
⚠️ Steering angle sensor calibration and road test required. Often requires front subframe lowering for access.
Transmission Control Unit (TCU)2.5 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Transmission housing, driver side near bell housing
🔧 Xentry Diagnostics + SCN online
⚠️ 9G-TRONIC transmission. Requires transmission fluid change, adaptation drive cycle, and SCN coding. Often integrated with valve body.
Climate Control Unit (CCU)2.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Behind center dashboard, above transmission tunnel
🔧 Xentry Diagnostics
⚠️ Requires HVAC actuator calibration and refrigerant system verification after coding.
MBUX Head Unit (HU/MBUX)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Center dashboard, integrated with touchscreen display
🔧 Xentry Diagnostics + SCN online
⚠️ Requires MBUX software download and vehicle personalization restore. Enhanced MBUX features in 2024+ models.
Signal Acquisition and Actuation Module - Rear (SAM-R)1.5 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Right rear cargo area, behind trim panel near tailgate hinge
📍 Steering column, integrated with ignition lock assembly
🔧 Xentry Diagnostics + SCN online
⚠️ Part of security triangle. All keys must be present for coding. Requires online authorization and ECM/cluster pairing.
Airmatic / Active Body Control Module (ADS/ABC)1.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Right front engine bay, near shock tower
🔧 Xentry Diagnostics + SCN online
⚠️ Air suspension system. Ride height calibration and all four corner leveling sensors must be adapted.
Motor Electronics / Engine Control Unit (ME/ECU)1.2 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Engine bay, left side firewall near brake master cylinder
🔧 Xentry Diagnostics + SCN online
⚠️ VIN-locked, requires online SCN coding and EIS pairing. Turbo wastegate and fuel injector adaptations mandatory. Updated cybersecurity protocols.
Intelligent Light System Control Unit (ILS)1.2 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Each headlight assembly, integrated with LED driver
🔧 Xentry Diagnostics
⚠️ Multibeam LED system. Headlight aim calibration required after replacement. Left and right modules separate. Enhanced Digital Light available 2024+.
Driver Assistance Package Control Unit (DAP)1.2 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Behind rearview mirror, integrated with sensor cluster
🔧 Xentry Diagnostics + SCN online
⚠️ Enhanced driver assistance features in 2024+ models. Coordinates multiple ADAS functions. Requires complete ADAS calibration suite.
⚠️ Adaptive cruise and collision prevention. Requires radar alignment with special reflector target. Front-end collision often damages. Enhanced sensor suite 2024+.
Electronic Stability Program Control Unit (ESP/ABS)1.0 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Engine bay, left front near battery and fender
🔧 Xentry Diagnostics + SCN online
⚠️ Integrated hydraulic unit. Brake bleed and steering angle sensor calibration required after replacement.
Camera Control Unit / Surround View (CCU)1.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Behind rearview mirror, integrated with camera assembly
🔧 Xentry Diagnostics
⚠️ 360-degree camera system. Camera alignment and calibration pattern required. Windshield removal affects calibration.
⚠️ Optional equipment. Trailer sway control integration with ESP required.
Parktronic Control Unit (PTS)0.8 hr R&Rdealer / factory tool +0.3 hr▸ programming details
📍 Behind rear bumper, center position
🔧 Xentry Diagnostics
⚠️ Ultrasonic parking sensors. Sensor calibration required after replacement.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2026 Mercedes-Benz GLE450 W167 3.0L I6 Turbo M256 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.