P0562 on Genesis: How to Diagnose & Fix
System Voltage Low
2 Genesis models · 2 documented issues · $200-$600 repair
P0562 on Genesis by model: symptoms, diagnosis and fix
G70 owners report the 12V battery going dead, sometimes overnight or after the car sits a few days, leaving the vehicle unable to start. Beyond normal battery aging, a recurring cause is parasitic draw — modules not fully going to sleep. The head unit/infotainment has been identified by owners as continuing to draw power with the car off, and other always-on modules can keep the draw above the normal sub-25 mA sleep target. The result is repeated no-starts even on cars with a healthy battery.
Common Symptoms
- Dead battery / no-crank after the car sits overnight or a few days
- Slow engine crank, dim lights, clicking when starting
- Battery repeatedly dies even after replacement
- Electronics behaving oddly before a no-start
How to Fix
Load-test the battery and check charging-system output first; replace the AGM battery if it fails. If the battery is good, measure parasitic draw with a multimeter after the modules sleep (target under ~25-50 mA) and pull fuses to isolate the offending circuit — the head unit/infotainment is a common culprit. Apply any infotainment/BMS software updates, and have the dealer check for related service campaigns. A battery maintainer helps cars that sit for long periods.
What you need to diagnose it
The fix here starts with a test, not a part — which repair you need depends on what the test finds.At least one code uses a manufacturer-specific format. No scanner recommendation is shown because family-level coverage cannot prove it can read that code.
UNI-T UT210E Low-Current DC Clamp Meter
1 mA resolution on the 2 A range — a 0.1 A meter reads a 50 mA drain as zero
$40–$70View
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Testing and isolating the fault is DIY work. Replacing or reprogramming a control module is not — most are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.
Sources for this issue (1)
Owners across both the ICE and Electrified GV70 report the 12V battery going dead after the car sits for only a few days, leaving the vehicle unresponsive and unable to start ('bricked'). Genesis Roadside and dealers have told owners the car must be driven 30 minutes every 3-7 days to keep the 12V charged. Reported root causes vary: parasitic draw from electronic modules and telematics, the key fob staying in constant communication when left in the car, a weak/corrupt-cell 12V battery, loose wiring, and on Electrified models a failing ICCU not charging the 12V. The pattern is frequent enough that many owners run battery tenders.
Common Symptoms
- Car dead/unresponsive after sitting a few days
- No-start, no dash lights, doors won't respond
- Repeated need to jump-start
- Battery dies again shortly after replacement
- Warning to drive the vehicle to charge the battery
How to Fix
Have the dealer perform a parasitic-draw test and load-test the 12V battery; replace the battery if a cell is bad (often done under warranty). Keep the key fob out of the car when parked for long periods, and on cars that sit, use a battery tender or drive ~30 minutes weekly. On Electrified GV70s, confirm the ICCU recalls (025G / 24V-204 family) are completed, since ICCU failure is a major cause of repeat 12V deaths. Persistent draw with no obvious cause warrants module-by-module isolation by the dealer.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- 12V AGM Starting Battery (80Ah) — early-build 2022 GV70 onlyOEM37110-AR820$250–$400
YEAR/BUILD VARIANT, not a second choice. GV70s built 03/2021-06/2021 (earliest 2022 model-year cars) were fitted with 37110-AR820 instead of 37110-CG820.
- 12V Auxiliary Battery & Vent Plug Assembly — Electrified GV70 (Dual-Motor EV)OEM37100-DS620Cross-refBCI Group 47 / H5 AGM (E-GMP platform size, shared with Ioni$450–$550
Completely different part from the gasoline GV70's battery — do not cross-shop them.
Sources for this issue (1)
P0562 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0562 mean on a Genesis?
P0562 stands for "System Voltage Low." P0562 means the engine computer detected that the vehicle's system (battery/charging) voltage is too low for normal operation. The computer constantly monitors charging-system voltage because nearly every sensor, injector, and module depends on a stable supply; sustained low voltage can cause erratic behavior and other false codes. This is most often a charging or battery problem — the alternator isn't keeping up, the battery is weak, or there's resistance in the cables/grounds. You may notice dim lights, slow cranking, or multiple unrelated warning lights. On Genesis it is documented across 2 models: G70, GV70.
What are the most common causes of P0562?
The most common causes of P0562 are: Failing alternator or worn alternator brushes/regulator, Weak, old, or discharged battery, Corroded, loose, or damaged battery cables and terminals, Bad engine or chassis ground connections, Slipping, glazed, or broken serpentine/drive belt, High resistance in charging system wiring or fusible link, Faulty PCM voltage reference or charging-system control. The specific cause varies by vehicle.
How much does it cost to fix P0562 on a Genesis?
Published repair estimates on Genesis range from $200 to $600 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0562 on a different make?
View P0562 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.