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Pinpoint Test F: Sub-Woofer Vibrating (Buzzing) Excessively

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

TEST CONDITIONS 

DETAILS/RESULTS/ACTIONS 

  1. F1: SUB-WOOFER VIBRATING (BUZZING) EXCESSIVELY 
    1. Check for extreme bass/treble settings

    Is the audio system output settings for bass and/or treble set too high?

    • Yes  : Adjust settings to appropriate levels
    • No  : Proceed to the next step GO to F2.
  2. F2: SUB-WOOFER VIBRATING (BUZZING) EXCESSIVELY 
    1. Check sub-woofer unit(s) fixing screws to body are securely fastened

    Are all sub-woofer fixing screws fully secured to the body?

    • Yes  : Proceed to the next step GO to F3.
    • No  : Tighten the fixing screws to the correct torque as directed in the workshop manual
  3. F3: SUB-WOOFER VIBRATING (BUZZING) EXCESSIVELY 
    1. Check security of trim, harnesses and paper labels in the vicinity of the subwoofer(s)

    Are these items secure in the vicinity of the subwoofer(s)?

    • Yes  : Proceed to the next step GO to F4.
    • No  : Check whether gentle contact with these items, where appropriate, relieves symptoms. If symptoms are relieved, fix source securely and prevent vibration
  4. F4: SUB-WOOFER VIBRATING (BUZZING) EXCESSIVELY 
    1. Remove subwoofer unit(s) (do not disassemble part) and hold in hand, taking care not to hold any moving parts of the assembly and not to damage the foam gaskets

    Does buzzing persist with subwoofer unit(s) in hand?

    • Yes  : Check for obvious debris in subwoofer unit(s). If there is debris and no damage, remove debris and retest for buzzing - if buzzing is fixed re-fit subwoofer unit(s), else replace subwoofer unit(s). If subwoofer unit(s) damaged, GO to F5.
    • No  : Re-fit subwoofer unit(s) and further investigate rattle due of nearby trim, modules, harnesses and components
  5. F5: SUB-WOOFER VIBRATING (BUZZING) EXCESSIVELY 
    1. Check for an obvious source of damage to prevent any replacement also becoming damaged

    Is there an obvious source of the subwoofer unit(s) damage?

    • Yes  : Remedy source of damage and fit replacement subwoofer unit(s)
    • No  : Fit replacement subwoofer unit(s)
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