NHTSA ID Number: 11027783
TSB Date: 2026-01-23
Manufacturer Communication Number: LI83.30-P-077763
Summary
Complaint Customer concern of Air Conditioning not cooling. *NOTE - Use of tracer DYE for leak checks is not approved. Only approved leak check procedures as per WIS are approved. Cause Possible refrigerant leak. Remedy Perform the following measures : *Important* - Photo documentation requirement is no longer in effect as of 10/1/2025. Remedy 1: Replace Evaporator (Only applies to vehicles produced PRIOR to April 15, 2022 and has NOT had the evaporator replaced previously) 1. Ensure that the rest of the AC system has been thoroughly checked for leaks with forming gas as per WIS before condemning the evaporator. 2. If no other leaks are found, replace the evaporator Note - *If the evaporator housing has been opened or the evaporator or housing has been tampered with, the claim will be debited. Remedy 2: (Applies to all vehicles produced on or AFTER April 15, 2022 up to April 1, 2025) 1. Ensure that the entire AC system has been thoroughly checked for leaks with forming gas as per WIS . 2. If no leaks were found AND the system came in with no cooling/low charge, OR the evaporator is suspected of leaking: 3. Replace ONLY the expansion valve bracket, seals, and bolts as supplied in kit A 167 832 47 00, in accordance with the procedure outlined in WIS document AR83.30-P-5520ME. 4. IF THE PRODUCTION DATE IS BETWEEN JUNE 1, 2023 AND JULY 1, 2024, REPLACE THE DRYER AS WELL. (NOT THE CONDENSER) 5. After, charge the system and perform a few drive cycles. 6. Recheck the vehicle for leaks. 7. If no leaks are found, the vehicle can be released. 8. If a minor leak is detected that is less than 50ppm, then perform the following steps: • If a leak is detected, fill the system with forming gas • Close all doors and windows for 10 minutes. • Vehicle off with no blower activation. • Open the driver's door and measure ppm detection as soon as the door is open and the sniffer goes into the vehicle. • If no leaks are measured, fill the system and release. Remedy 3: (Only applies to vehicles produced AFTER April 1, 2025) *TIPS Case Required if leak is found other than a bent bracket* Ensure that the entire AC system has been thoroughly checked for leaks with forming gas as per WIS . If no leaks are found or the expansion valve has been found to be leaking, remove the expansion valve and check the bracket. If the bracket is bent, replace the expansion valve bracket, seals, and bolts as supplied in kit A 167 832 47 00. In the warranty submission, include photos of both sides of the bracket and a side profile so it can be seen that the bracket is bent. If the bracket is NOT bent or leaks from other locations are found, then open a TIPS case with the following: 1. Initial Quick Test 2. Create a short video of the actual pressures via AC machine, showing the engine running, and hold a copy of the VIN/RO in view as well. 3. OBS recording of XENTRY AC actual values of compressor request to be on and current value. (Instructions in Attachments) 4. Video recording of the leak being found via sniffer at the R/F AC drain after removing the under dash panel if the evaporator is suspected. (see attached videos) 5. If the evaporator is found to be leaking via sniffer, another video needs to be uploaded (or a continuation if only making the video after checks), showing the expansion valve being checked for leaks. 6. If no leaks are found with the sniffer at the expansion valve, spray soapy water mix on the expansion valve and check for leaks. Upload a video showing the spray test and VIN. 7. Provide photos of both sides of the bracket and a side profile so it can be seen that the bracket is not bent. 8. Open a TIPS case in the HV/LV inbox labeled "167 AC leak after April 1, 2025" with all attachments. NOTE: (Applies to all 167's) • Please see the list of WIS documents for forming gas leak check and recharging of the system. • Review PCTT 9/25 for forming gas best practices. See attachment for complete instructions
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Read More...NHTSA ID Number: 11027782
TSB Date: 2026-01-23
Manufacturer Communication Number: LI00.01-P-078887
Summary
Complaint The intent of this document is to provide workshops with helpful technical reference language. • Commonly used acronyms in LI's and TIPS cases. • Control unit names, numbers, and how to identify. • Network/wiring architecture groups to baumuster quick reference. • Platform to baumuster quick reference. Cause Information only Remedy Acronyms: • AV = Actual Values • CU = Control Unit • CUL = Control Unit Log • DTC = Diagnostic Trouble Code • E-Stand = Fresh-up head unit boot software (found in head unit control unit log) • FUP = Fresh-up • FW = Firmware • HSVL = High Speed Video Line • HU = Head Unit • HW = Hardware • IPD = Injector Performance Data • ISU = Initial Start Up • LVDS = Low Voltage Differential Signal • NAG"x" = New Automatic Gearbox ("x" is the generation number, example: NAG3) • NSFT = Not Safe For Transport • MOPF = Model Facelift (Ex: 167 MOPF) • PiH = Plug-in Hybrid • P3 Hybrid = AMG Plug-in Hybrid with rear drive unit • SA Code = Sonderausstattungscode (Option Code) • SCN = Software Calibration Number • SW = Software • TCU = Telecommunication Control Unit (Hermes/Ramses/Etc...) • QT = Quicktest • XD = XENTRY Diagnosis Control Unit Identification: Refer to the attachment "Control Unit Nomenclature" for location of each. • Control Unit Name • Control Unit Number • Control Unit Short name • Control Unit Diogenes ("dy-oj-uh-neez") name - Control unit variant/family. Network/Wiring Architecture to Baumuster Quick Reference: Star 1 • 117, 156, 246 (MFA) • 166, 176, 221, 242, 246, 292 Star 2 • 205, 213, 238, 253, 257, 290 (MRA) • 117, 156, 246 (MFA) • 118, 177, 243, 247 (MFA2) • 167, 222, 292, 463, 465, 906 Star 3 • 294, 295, 296, 297 (EVA2) • 206, 214, 223, 236, 254 (MRA2) • 192 and 232 (MSA) • 907 Platform to Baumuster Quick Reference: MRA = "Mercedes-Benz Rearwheel Architecture": • 205 • 213 • 222 • 238 • 253 • 257 • 290 MRA2 = "Mercedes-Benz Rearwheel Architecture - Generation 2": • 206 • 214 • 223 • 236 • 254 MFA = "Mercedes-Benz Frontwheel Architecture" • 117 • 156 • 246 MFA2 = "Mercedes-Benz Frontwheel Architecture - Generation 2" • 118 • 177 • 243 • 247 EVA1.5 = "Electric Vehicle Architecture" • 243 EVA2 = "Electric Vehicle Architecture - Generation 2" • 294 • 295 • 296 • 297 MSA = "Mercedes-Benz Sport Architecture" • 192 • 232 MMA = "Mercedes-Benz Modular Architecture" • 174
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Read More...NHTSA ID Number: 11027781
TSB Date: 2026-01-23
Manufacturer Communication Number: LI35.31-P-074854
Summary
Complaint Noises from the rear axle differential, particularly when cornering slowly Cause Small quantity of water entering into oil of multiplate clutches at right and left Remedy Follow below steps to install vent hose A 177 350 02 03: (See attachment section for installation instructions with reference photos if needed) 1. Raise the vehicle with the vehicle lift 2. Detach the old breathers (2x) from the clutch housing right and left using a suitable tool (Figure 1) 3. Support rear axle differential 4. Remove the rear screw from the rear axle differential on the rear axle carrier (Figure 2) Note: pay attention to the position of the adjustment disc and mark it! 5. Lower rear axle differential 6. Clean the upper bore (Figure 6) on the left side of the rear axle carrier 7. Place the new vent hose with the Y-vent connector from right to left in front of the right rear axle shaft over the rear axle differential (Figure 3) 8. Slide the angle connectors onto the vent connections onto the rear axle differential on the left (Figure 4) and right (Figure 5) 9. Install the vent connection of the new line on the left side into the upper bore (Figure 6) of the rear axle carrier (Figure 7) 10. Attach the fastening clip (pre-assembled on the new bleed line) to the rear axle differential housing. (Figure 8) 11. Lift the rear axle differential and install the screw from the rear axle carrier (M14 torque 150 Nm) Note: pay attention to the position of the adjustment disc! Once new vent hose is installed: 1. Carry out oil change of clutch oil on left and right sides (Shell TF0870B). - DO NOT change the gear set oil (at center), since this is a long-life oil that is not related to the cause Return the vehicle to the customer and inform them that they must drive a distance of at least 250 km (155mi); The complaint should no longer occur.
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Read More...NHTSA ID Number: 11027780
TSB Date: 2026-01-23
Manufacturer Communication Number: M650125
Summary
While using MINI Personal Assistant, the activation word (“Hey MINI”) must be reactivated after everyterminal change, MINI Remote Software Upgrade; or profile change. Additionally, after a MINI Remote Software Upgrade, the setup process for the voice assistant must be runagain. This was not the case previously.
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Read More...NHTSA ID Number: 11027779
TSB Date: 2026-01-23
Manufacturer Communication Number: M630126
Summary
On rare occasions, a check control message may be displayed indicating a malfunction in the rear lightingfunctions, including the brake light, taillight, side light; or turn indicator. Functionality can be restored following a terminal change. In addition, the following fault codes entries may be stored in the RLMAL or RLMAR control unit 80807D - RLM control unit: Internal component error 808004 - SEPIC: SEPIC short circuit/overload current to terminal 31 8081FD - RLM control unit: Internal component error 808184 - SEPIC: SEPIC short circuit/overload current to terminal 31
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Read More...NHTSA ID Number: 11027778
TSB Date: 2026-01-23
Manufacturer Communication Number: 24M31011
Summary
During inspection and/or diagnosis there is noticeable dirt/grease buildup on the axles near the inner and/orouter CV boots.
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Read More...NHTSA ID Number: 11027777
TSB Date: 2026-01-23
Manufacturer Communication Number: B652025
Summary
After replacing the Multifunctional Display (MFD), the Central Information Display (CID) is black. Thebacklight of the CID is illuminated, and touch function does register an audible sound.
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Read More...NHTSA ID Number: 11027776
TSB Date: 2026-01-23
Manufacturer Communication Number: B650226
Summary
While using BMW Intelligent Personal Assistant, the activation word (“Hey BMW”) must be reactivated afterevery terminal change, BMW Remote Software Upgrade; or customer profile change. Additionally, after a BMW Remote Software Upgrade, the setup process for the voice assistant must be runagain. This was not the case previously.
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Read More...NHTSA ID Number: 11027775
TSB Date: 2026-01-23
Manufacturer Communication Number: B650126
Summary
The customer returns after taking delivery of anew G45 X3 SAV, with a piece of the air bagwarning hang tag stuck between the centraldisplay screen upon attempting the tag’sremoval. The remaining portion of the tag is ofinsufficient length to extract it.
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Read More...NHTSA ID Number: 11027774
TSB Date: 2026-01-23
Manufacturer Communication Number: B612425
Summary
A limited number of 48 (V) volt vehicle batteries may have been damaged during the manufacturing process;this could lead to a premature battery failure. The 48 V battery may fail, triggering a corresponding Check Control message.
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- CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on. After repairing the vehicle's problems, it can quickly read and clear diagnostic trouble codes of emission system, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information.
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- Wide Capability - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 6 languages - English,German, Dutch, Spanish, French, Italian.
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- 【Your Personal CEL Doctor – Read & Clear Engine Codes】The NT301 OBD2 scanner lets you read diagnostic trouble codes (DTCs), check em-issions readiness, turn off your Check Engine Light (CEL) or MIL, reset monitors, and view live data streams. It retrieves your vehicle's VIN instantly. Like all standard OBD2 scanners, it clears codes only after repairs are completed—if the issue persists, the code will return. Designed for DIYers who want to understand what’s really going on under the hood.
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Last update on 2026-03-25 / Affiliate links / Images from Amazon Product Advertising API
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