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Distorted Sound From Horns When Operated (LTB00515V3)

Publication date: 2014-08-29
Reference number: LTB00515V3
Supersedes refnos: LTB00515V2

DISTORTED SOUND FROM HORNS WHEN OPERATED

DISTORTED SOUND FROM HORNS WHEN OPERATED

TECHNICAL SERVICE BULLETIN

Reference Number(s): LTB00515v3, Date of Issue:  August 29, 2014
LAND ROVER: 2010-2013 Discovery 4/LR4 (LA), Range Rover Sport (LS); 2011-2012 Range Rover (LM); 2012-2014 Range Rover Evoque (LV)
SECTION: 413-06
AFFECTED VEHICLES: Discovery 4/LR4 (LA) Model Year: 2010-2013 VIN: AA510178-CA699715 Range Rover Sport (LS); Model Year: 2010-2013 VIN: AA212145-CA814822; Range Rover (LM) Model Year: 2011-2012 VIN: BA337480-CA393639; Range Rover Evoque (LV) Model Year: 2012-2014 VIN: CH600000-DH856579
Superceded Bulletin(s): LTB00515v2/2014, Date of Issue:  July 03, 2014
NOTE: This bulletin supersedes TSB LTB00515v2/2014 dated 03 JUL 2014, which should either be destroyed or clearly marked to show it is no longer valid (e.g. with a line across the page). Only refer to the electronic version of this Technical Bulletin in TOPIx.

MARKETS

Algeria, Angola, Australia, Bahrain, Bangladesh, Barbados, Benin, Bermuda, Canary Islands, China, Dominican Republic, Egypt, Ghana, India, Iran, Iraq, Israel, Jamaica, Jordan, Kenya, Kuwait, Lebanon, Liberia, Libya, Madagascar, Malawi, Mauritius, Morocco, Mozambique, New Zealand, Nigeria, Oman, Pakistan, Qatar, Russia, Saint Lucia, Saudi Arabia, Somalia, South Africa, Syria, Tahiti (French Polynesia), Tanzania, Trinidad and Tobago, Tunisia, Turkey, Turks and Caicos Islands, Uganda, United Arab Emirates, Yemen, Zambia and Zimbabwe

CONDITION SUMMARY

Situation:  A customer may report that the horn sounds distorted when operated. This version has been issued for the addition of Evoque to the Service Instruction, Warranty and Parts sections. 

Cause:  Faulty diode within the horn. Suggested Customer Concern Code - JB1. 

Action:  Should a customer express concern, follow the Service Instruction outlined below.

PARTS

PARTS INFORMATION

LR056648 Long life horn assembly - Range Rover Sport/Discovery 4/LR4 Quantity: 1
LR047632 High tone long life horn - Range Rover Quantity: 1
LR047631 Low tone long life horn - Range Rover Quantity: 1
LR024773 Link wiring harness - Range Rover Quantity: 1
LR061699 Long life horn assembly - Range Rover Evoque Quantity: 1

WARRANTY

NOTE: Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to TOPIx to obtain the latest repair time.
NOTE: DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.
DESCRIPTION SRO TIME (HOURS) CONDITION CODE CAUSAL PART
Replace existing horn with long life horn - Range Rover Sport and Discovery 4 86.30.89/30  0.2 42 LR014561
Replace existing horn with long life horn - Range Rover 86.30.89/30  1.1 42 LR034092
Replace existing horn with long life horn - Range Rover Evoque 86.30.89/30  0.2 42 LR039649
NOTE: Normal Warranty policies and procedures apply.

SERVICE INSTRUCTION

NOTE: Removal steps in this procedure may contain installation details.
NOTE: Some variation in the illustrations may occur, but the essential information is always correct.

Range Rover Sport and Discovery 4/LR4 Only 

  1. Remove the radiator grille (see TOPIx Workshop Manual, section 501-08).
  2. Note the difference between the horn assemblies.
    • Old design horn assembly (1).
    • New design horn assembly (with or without wiring harness) (2).
      G09501708
    NOTE: New design horn assembly shown, old design similar.
  3. Remove and discard the horn assembly.
    • Disconnect the electrical connector (1).
    • If installed, release the electrical connector (2).
    • Remove the retaining bolts (3).
      G09501709
    NOTE: If the new horn supplied does not have a wiring harness attached, go to Step 5.
  4. Install the new horn assembly.
    • Connect the electrical connector (1).
    • If installed, secure the electrical connector (2).
    • Install the Torx bolts (3).
    • Torque: 7 Nm
    • Go to step  8.
      G09501710
    NOTE: Both of the wires in the wiring harness are coloured black, make sure that they are clearly marked to prevent incorrect installation.
  5. Locate the electrical connecter (1).
    • Using a suitable marker, clearly mark one of the wiring harness wires and the corresponding cavity in the electrical connector on the body wiring harness.
      G09501711
    NOTE: Both of the wires in the wiring harness are coloured black, make sure that they are clearly marked to prevent incorrect installation.
  6. Using a suitable terminal release tool from the harness repair kit, swap the wiring harness wires in the electrical connector from one cavity into the other cavity.
    • Release the anti back-out device.
    • Using the special tool, release both wiring harness wires.
    • Install both wiring harness wires in to the other cavity.
    • Secure the anti back-out device.
      G09501712
  7. Install electrical connecter to horn.
    • Apply the horn to check the horn is operating correctly.
  8. Install the radiator grille (see TOPIx Workshop Manual, section 501-08).

    Range Rover Only 

  9. Remove the front bumper cover (see TOPIx Workshop Manual, section 501-19).
    NOTE: Note the installed position of the component to aid installation.
    NOTE: The high tone horn is located in front of the right hand lower side of the radiator.
  10. Remove and discard the horn assembly.
    • Disconnect the electrical connector.
    • Release the retaining clip.
    • Remove the nut.
      G09501713
    NOTE: Note the installed position of the component to aid installation.
    NOTE: This low tone horn is located behind the right side of the front bumper.
  11. Disconnect the electrical connectors from the low tone horn.
    • Disconnect the electrical connectors
    • Release the fir tree clip.
      G09501714
    NOTE: Note the installed position of the component to aid installation.
  12. Remove and discard the horn assembly.
    • Remove the retaining bolt.
      G09501715
    NOTE: Note the installed position of the component to aid installation.
  13. Remove and discard wiring harness.
    • Release the 2 retaining clips.
      G09501716
    NOTE: Both of the wiring harness wires are coloured black, make sure that they are clearly marked to prevent incorrect installation.
  14. Using a suitable marker, clearly mark one of the wiring harness wires and the corresponding cavity in the electrical connector on the body harness.
    G09501717
    NOTE: Both of the wiring harness wires are coloured black, make sure that they are clearly marked to prevent incorrect installation.
  15. Using a suitable terminal release tool from the harness repair kit, swap the wiring harness wires in the electrical connector from one cavity into the other cavity.
    • Release the anti back-out device.
    • Using the special tool, release both wiring harness wires.
    • Install both wiring harness wires in to the other cavity.
    • Secure the anti back-out device.
      G09501718
    NOTE: Test the horn for correct operation before installing the front bumper cover.
  16. To install, reverse the Steps  7 to  10 with the new horns and new wiring harness.
    • Install the horn mounting bracket retaining nut and bolt.
    • Torque: 7 Nm
  17. Install the front bumper cover (see TOPIx Workshop Manual, section 501-19).

    Range Rover Evoque Only 

  18. Remove the horn assembly (see TOPIx Workshop Manual, section 413-06).
    NOTE: Both of the wiring harness wires are coloured black, make sure that they are clearly marked to prevent incorrect installation.
  19. Using a suitable terminal release tool from the harness repair kit, swap the wires in the electrical connector from one cavity into the other cavity.
    • Release the anti back-out device.
    • Using the special tool, release both wiring harness wires.
    • Install both wiring harness wires in to the other cavity.
    • Secure the anti back-out device.
      G09501719
  20. Install the horn assembly (see TOPIx Workshop Manual, section 413-06).
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