2021 Audi Power Rear Lid Won't Open DTC B113E07 B113E29

Symptoms

Owners of certain 2021 Audi models may experience a complete failure of the power rear lid to open. This means the rear lid cannot be opened using the vehicle key, the interior/exterior buttons, or the emergency release mechanism. This symptom indicates a problem with the rear lid's closing assist system, preventing proper operation.

Fault Codes / DTCs

When the power rear lid cannot be opened, technicians may find one or both of the following Diagnostic Trouble Codes (DTCs) stored in the rear lid electronics control module, designated as J605 (address word 006D):

Code	Description
B113E29	Closing assistance Range/Performance
B113E07	Closing assistance mechanical malfunction

These codes specifically point to issues within the closing assist mechanism of the rear lid.

Diagnosis and Trigger Conditions

The root cause of the power rear lid cannot be opened issue is attributed to component-related deviations within the rear lid closing assist motor. These deviations can lead to the motor becoming internally blocked. When the closing assist motor is blocked, it cannot release the rotary latch of the rear lid lock, preventing the lid from opening.

Audi implemented optimized rear lid closing assist motors in series production starting with Model Year 2022 vehicles to address this manufacturing deviation.

Repair Procedure Summary

For vehicles exhibiting the symptom where the Audi power rear lid won't open and DTCs B113E07 or B113E29 are present, the following repair steps are outlined in Technical Service Bulletin 2064020/1:

1. Temporary Unblock: If the power rear lid cannot be opened, a temporary solution involves carefully knocking on the rear lid in the area of the closing assist motor (as shown in Figure 2 of the TSB). The vibrations from this action may release the internal blockage in the motor.
2. Access and Removal: Once the rear lid is open, the rear lid lower trim panel must be removed. This procedure should be followed according to the instructions in the Elsa Repair Manual.
3. Component Replacement: The primary repair involves replacing the faulty closing assist motor. This is the core fix for the internal blockage issue.
4. Operational Check: After replacing the motor, its operation and the functionality of the power rear lid must be checked thoroughly before reinstallation of any components.
5. Reassembly and Clearance: Finally, the rear lid lower trim panel is reinstalled, and any relevant DTCs stored in the J605 module are cleared using a diagnostic tool.

Required Tools or Parts

To perform this repair, specific parts and diagnostic tools are necessary:

• Liftgate Motor (Closing Assist Motor):
  • Part Number 3V5827887C: For Audi A6, A7, Q5, and Q8 models.
  • Part Number 5TA827887C: For Audi Q3 models.
• Fasteners: Fasteners, bolts, nuts, and screws as needed per the Repair Manual (refer to ETKA/ELSA).
• Diagnostic Tool: VAS 6160 or VAS 6150 tester, equipped with the current version of ODIS (Windows 10).

Important Warnings

Owners should be aware that if their vehicle is outside of its warranty period, this Technical Service Bulletin is for informational purposes only. Warranty claims are subject to review by Audi Warranty and must adhere to the Audi Warranty Policies and Procedures Manual.

Owner Action

If you experience a power rear lid that won't open on your 2021 Audi model, and suspect DTCs B113E07 or B113E29, it is recommended to contact your authorized Audi dealership. They can diagnose the issue, confirm the presence of the relevant DTCs, and perform the necessary repair as outlined in TSB 2064020/1. This repair is typically covered under the standard warranty, up to 48 months or 50,000 miles, and for CPO (Certified Pre-Owned) vehicles after owner verification.

NHTSA Source Citation

NHTSA ID: 10199421