Dacia Sandero power steering failures

Car: Dacia Sandero
Variant: 999 TCO
Model Year: 2021
Categories: Steering, Suspension, Brakes, Wheels & Tyres
When turning wheel, power Steering intermittently stops operating. When driving straight there's no problem.
Posted: Jun 24, 2025 (5 months ago)
Could LOAD test your battery as , if in low condition it can cause problems like this
Posted Jun 25, 2025 (5 months ago)
Many Thanks for your reply whittingehame;
As I'm unsure how to LOAD test a battery, I've taken your advice and hopefully done the next best thing, which is, put the battery, 'on charge' (still connected in the vehicle).
My battery charger default indicator reads from 1 to 5. I've connected the positive and negative bull dog clips onto their respective battery terminals, and switched the charger on. The reading instantly read 2.5 (half-way). I'll leave it on charge until about 10pm tonight (5 hours) and then disconnect.
Tomorrow I'm out in the vehicle first thing, so hopefully any additional battery charge will provide a positive indication as to whether any power steering failures still occur. They mainly occur within a minute or so, because that's my first turn at the end of my road. Hopefully, no power steering failures occur. Fingers crossed I know I'll need to buy a new battery, if the problems solved which means your analysis was, 'spot on'. I'll repost tomorrow when I return home to update all.

Oh! something else, I've just recently noticed, on my instrument panel a warning notice pops up periodically saying "Remote FOB battery LOW". I'll see tomorrow, if charging the car battery eradicated the power steering problem. If it has, great, I'll but a new car battery. I'll then change the FOB battery soon after. (which is something I intended doing anyway). For all I know, if the Power Steering persists, and before changing the FOB battery, and then it disappears after changing the FOB battery, then we've all learnt something. I read the FOB battery needs to be replaced periodically to ensure the ECU is synchronised when a Full charged FOB is in the vehicle. Kind Regards.
Posted Jun 25, 2025 (5 months ago)
From what you say it would appear from the charger reading your battery is on the low side . It may be o.k , have no weak cells and just needing topped up by charging as you are doing . Fingers crossed charging solves the fault .
Posted Jun 25, 2025 (5 months ago)
Replying to post by whittingehame:
From what you say it would appear from the charger reading your battery is on the low side . It may be o.k , have no weak cells and just needing topped up by charging as you are doing . Fingers crossed charging solves the fault .
Hello whittinghame,
I can't understand why I can't see my last post, which as promised I did shortly after charging my battery for 4 hours and being out in the vehicle the very next day.

It was rather a long reply, (like this one) so I'll recap the main bullet points again.
My charger registers from 1 to 5 with 5 having no life in the battery at all. Therefore, as the battery takes in charge it suppose to move towards 0 (Zero meaning fully charged). My battery charger, stayed on one. So the net day I charged it for a further 12 hours. When connecting, "Like before it registered 2.5 but reduced down to one, yet would not go any lower to zero, no matter how much longer it was on charge. SO, I tried again the next day and it was a repeat. Initially registering 2.5 but would only register down to 1. (This indicates, that's it's possibly a faulty cell).

Irrespective of the additional charger reading, clearly more charge had been input into the battery. Thankfully, upon driving I did not experience any power steering failures.
SO, in short, it seems, having a slightly depleted battery can effect power steering.
With this fault in mind, it raises heath and safety issues within Dacia's software, and diagnostic checks.
If I go back to how I experienced my power steering fault, 'and before adding any additional charge into my battery' the Dacia Sandero Stepway Comfort raises some serious issues.
When this first ever happened, upon pressing the start button, with fob in centre box to turn on the engine the management system goes through it checks. It confirmed "CHECKS OK" (which surely gives the opinion that the car is safe to drive.) This clearly, is not the case, because before I added any additional boost to the battery, the steering faltered "within a few hundred yards". So in essence, the "OK" reading was flawed. Had I not previously been aware of the power steering failure when I first drove home and experienced heavy steering, then it raises questions to the efficacy of Dacia's ECU software and diagnostic checks.
When my battery received that "extra" charge, the management systems reported exactly the same "CHECKS OK" but with the additional battery charge, the Power Steering never faulted 'not once' whereas previously, it would fail at every slow revving turn. To me this indicates a low charge battery allows the engine to temporary stall at low revs, allowing the electrics in the power steering to shut off.
Clearly upon start up the dashboard indication that's basically gives you the all 'OK' YOUR GOOD TO GO" is wrong. If DACIA ever read these posts then for sure they should rectify this fault because lives are risk when being informed under false illusions that the vehicle is "OK" and Good to Go, when clearly it's not.
They say the best testers are the "Users". Users, within all products, uncover potentially irregular issues. In my case when irregularities can effect lives, one can only hope DACIA reacts to this dangerous issue. It would not surprise me, that a non fully charged battery raises questions and answers to many other types of issues raised within the forum.

Speaking of 'Users', being the best and trusted tester's, It goes without saying that Whittinghame, knows his stuff. He pin-pointed the battery issue, (in my case) and that analysis, proved to be spot-on.
Can I ask!! Whittinghame, are you, in any way, associated with the manufacturer 'DACIA'? My reason for asking is, because you clearly know you onions from runner beans 'so to speak' and for someone to be so aware of so many intricacies' as you do, about a manufacturers models, it raises the question how you know so much about Dacia. Your post's highlight this clearly, and I've noticed, your points do not increase any further than 39,369. Which by definition, makes yo an expert in the field of DACIA. Irrespective whether you do, or do not, confirm your association with DACIA, I'd like to express a very grateful and humble "Thank You" for guiding me to a low battery fault, when every other indication within the management software never gave a clue or even warned that OK is NOT ALWAYS OK.
Kind Regards
Doug.
Posted Jun 30, 2025 (5 months ago)
If the battery charge is low, and the battery is not worn out due to age degradation, suspect poor charging by the alternator, which may be as simple as a loose/worn alternator belt which is slipping under load.
Posted Nov 14, 2025 (2 weeks ago)

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