Discovery 2017

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  • ankur
    Member Since: 12 Apr 2024
    Location: Chester
    Posts: 10
    United Kingdom 
    2018 Discovery Td6 HSE Santorini Black

    Parking sensor can’t be enabled and no errors

    Hi,

    I’m unable to start the parking sensors in my discovery (2018). There is a known issue with one of the front sensors that i need to take a look at but I can’t imagine that is preventing the whole parking sensor system from working.

    When I put the car in reverse, there’s a red line through the icon and a cross through the speaker icon. Tapping on the icon on the lower bar makes it blink orange a couple of times but then it stops and nothing has changed and no errors.





    Any ideas what I can do to diagnose the issue?
    22nd May 2024 9:53 am
  • ankur
    Member Since: 12 Apr 2024
    Location: Chester
    Posts: 10
    United Kingdom 
    2018 Discovery Td6 HSE Santorini Black

    I noticed that when I put the car in reverse after starting the car, it will beep continuously for about 3 seconds, and then stop. That same issue won't occur again until a fresh start of the car.
    22nd May 2024 9:57 pm
  • ankur
    Member Since: 12 Apr 2024
    Location: Chester
    Posts: 10
    United Kingdom 
    2018 Discovery Td6 HSE Santorini Black

    I read elsewhere that if one of the sensors is not working the whole system stops working, so I'm going to fix/replace the broken sensor and try again.
    23rd May 2024 8:14 am
  • ankur
    Member Since: 12 Apr 2024
    Location: Chester
    Posts: 10
    United Kingdom 
    2018 Discovery Td6 HSE Santorini Black

    Confirmed! After replacing single faulty sensor the whole system now works again.
    28th May 2024 5:21 pm
  • PRH
    Member Since: 15 Feb 2018
    Location: South
    Posts: 51
    United Kingdom 
    2019 Discovery Sd4 (180) HSE Lux Indus Silver

    Well done and thank you for reporting the outcome. Good reference for others with similar issues.
    29th May 2024 9:03 am
  • Nifty77
    Member Since: 24 Mar 2025
    Location: South East
    Posts: 1
    England 

    Hi, how did you locate a faulty sensor?
    24th Mar 2025 10:39 pm
  • ankur
    Member Since: 12 Apr 2024
    Location: Chester
    Posts: 10
    United Kingdom 
    2018 Discovery Td6 HSE Santorini Black

    @ Nifty77 I was lucky in my case. The faulty sensor was visibly damaged, it had a massive gash in it. I'm fairly certain that the error codes from the OBD reader also identified the faulty sensor.
    1st Apr 2025 12:42 pm
  • Stelypro
    Member Since: 03 May 2025
    Location: Stevenage
    Posts: 1
    United Kingdom 
    2017 Discovery TDV6 HSE Carpathian Grey

    Hi. Have you manage to sort it out?

    I have the same problem on my 2017 HSE.
    8th May 2025 8:37 pm
  • Mole HD
    Member Since: 18 Nov 2024
    Location: Orkney Islands
    Posts: 55
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    An old school trick for checking parking sensors was by holding a mobile phone close to each sensor...you could hear the clicks through the phone speaker. No clicking pointed to the offending sensor. The D5 sensors are ultrasonic so emit high frequency sound waves.

    Electromagnetic parking sensors work slightly differently but they're usually not visible like the round, button shaped ultrasonic type found commonly on most cars.

    Haven't done that in many years though. Otherwise, checking for obvious damage or scoring on the face of the sensor would be my first port of call...barring that, GAP IID tool or equivalent ODB diagnostic tool...or as a last resort, pull the bumpers off and test each sensor and connections individually with a multimeter. Occasionally, the connecting plugs and terminals on the sensor can get corroded on older vehicles, usually the corner ones near the wheels due to water spray etc.

    Individual replacement sensors are cheap enough...and they're basically plug and play so no technical skills required in replacing them....the hardest bit besides noticing obvious damage is finding which one (or more) is causing the problem Neutral
    Atque in perpetuum, frater. Ave atque vale
    9th May 2025 6:16 pm
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