Discovery 2017

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  • Penuwchian
    Member Since: 01 Sep 2025
    Location: Wales
    Posts: 20
     

    2017 2.0lt Battery

    Hi

    My discovery is currently at main dealer having been recovered there start of the week.

    Symptoms- whilst driving, infotainment screen started randomly restarting. Wipers started juddering, as if losing power. Car ran fine

    Arrived at destination and turned car off- had a "vehicle not in park" message which was unusual.

    Car then wouldn't start. Hazards wouldn't work. Wouldn't lock- completely unresponsive, with the only sign of power being the rear side lights on.

    AA arrived via land rover assist- connected battery pack and car started. Told me battery was putting out 13v. Alternator seemed good, but couldn't diagnose. Car recovered to main dealer.

    They've now rang me to say it needs a new battery (stop start hasn't worked properly for a while).

    They want £650 to fit!

    Symptoms sound more than a dodgy battery to me...

    Any thoughts?
    17th Apr 2026 9:41 am
  • Mole HD
    Member Since: 19 Nov 2024
    Location: Orkney Islands
    Posts: 802
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    It sounds more like a dodgy main battery earthing stud...it was a known fault on some vehicles. With the battery putting out 13v after a boost start, it may be a contributing factor but your list of symptoms definitely don't seem like a low battery fault...no matter what the dealership are telling you.



    If the car broke down as in your case, it was usually recalled or put to a dealership and the faulty earth stud (centre of pic next to fingers) was redrilled and replaced...but a common fix at the roadside, which I'm a bit bewildered that LR assist didn't look at given your symptoms, was to use an alternative earthing point to get you going...there's a few earthing points in the battery compartment that work just as well (as shown in pic) until a new earth stud can be fitted...if at all. Once the earth strap is moved, it's usually fine.

    I'd get the dealership to look at the battery earth too rather than just replace the battery.

    .
    19th Apr 2026 4:46 pm
  • Penuwchian
    Member Since: 01 Sep 2025
    Location: Wales
    Posts: 20
     

    Thanks. I'm planning on replacing the battery myself, as the quoted replacement price is extortionate- but won't get a chance to collect until tomorrow at least. Am very keen to retain the warranty but the dealer confirmed fitting else where won't affect it- and £400 over the odds for a battery change is a tad extreme!

    I'd not mentioned- the stop/start hasn't worked for a little while- presume that's a battery symptom? Or could that too be down to earth?
    20th Apr 2026 4:55 am
  • Mole HD
    Member Since: 19 Nov 2024
    Location: Orkney Islands
    Posts: 802
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    I've heard from a few folk on here that their auto stop/start doesn't seem to work reliably so it seems it's not an uncommon thing... it may be tied to a low battery but I couldn't say for certain. I've never used the auto stop/start living where I do so I don't know if mine works or not...

    I've also edited the CCF with my IID tool so the stop/start function always remembers what it was last set to instead of being enabled by default. Since I never use it, it now defaults to being off when I start the engine.

    As for battery replacement, I usually get mine online from Tayna Batteries. It's one of the small prices we pay for being a bit geographically challenged...can't just pop round to the nearest Halfrauds for a new battery. Laughing

    Just in case you've never replaced the battery on a D5, this little video I linked a year or so ago gives a rough guide...it's not a very good video but it was the only one I could find online at the time. If you do replace the battery yourself, you'll need a diagnostic tool to reset the BMS (Battery Monitoring System).




    Last edited by Mole HD on 3rd May 2026 12:34 am. Edited 1 time in total
    20th Apr 2026 5:23 am
  • Penuwchian
    Member Since: 01 Sep 2025
    Location: Wales
    Posts: 20
     

    Thanks. Not much call for the stop start with me either to be honest- didn't notice it was broken for a while...

    Bosch ordered from Tanya. Thanks
    20th Apr 2026 7:05 am
  • Penuwchian
    Member Since: 01 Sep 2025
    Location: Wales
    Posts: 20
     

    Will also bring to local independent to sort the BMS.
    20th Apr 2026 7:09 am
  • Penuwchian
    Member Since: 01 Sep 2025
    Location: Wales
    Posts: 20
     

    Car collected, battery changed...

    Fault still there- but goes away after playing with the earth cable in battery compartment, so I think we have our answer... Glad I only paid £170 for battery not the robbery the stealer wanted...

    Now need to get them to sort the earth out..
    2nd May 2026 8:12 am
  • Mole HD
    Member Since: 19 Nov 2024
    Location: Orkney Islands
    Posts: 802
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    Aye, didn't think it was a low battery fault...not with your list of symptoms. Neutral

    As a temporary fix until the dealership or local indy sort out the earth stud, you could move the earth cable onto that alternative earthing point I showed in the pic. It would keep you going... reliably... in the meantime.
    2nd May 2026 8:19 am
  • Penuwchian
    Member Since: 01 Sep 2025
    Location: Wales
    Posts: 20
     

    Am torn between getting land rover assist to recover, and then the bother of getting the car back from dealer over an hour away, or just sorting it myself. Will probably go the latter.

    When it went in last time, they dropped a hire car as a courtesy- a brand new BMW X5 3.0lt V8 Msport... which the wife was quite taken with... think this may cost me more than a battery...
    2nd May 2026 8:23 am
  • Penuwchian
    Member Since: 01 Sep 2025
    Location: Wales
    Posts: 20
     

    Called assist.

    AA deployed- and earth moved. Could have done it myself, but thought given warranty, leave it to them...
    2nd May 2026 3:34 pm
  • Mole HD
    Member Since: 19 Nov 2024
    Location: Orkney Islands
    Posts: 802
    Scotland 
    2017 Discovery Td6 HSE Fuji White

    Good news that it's fixed...and that's exactly what the warranty cover (and LR Assist) is for. Thumbs Up

    Still bewildering to me that the AA via LR assist didn't properly diagnose and fix the problem at the roadside when it first happened, even more so that a main dealership didn't check it either given the faulty earth stud is a known issue on some vehicles.

    Mind you, given the courtesy car you got when your car was at the dealership...like your wife, I wouldn't be complaining too much either truth be told. Laughing
    2nd May 2026 11:14 pm
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