P0562 on Mercedes-Benz
System Voltage Low
P0562 on Mercedes-Benz vehicles indicates system voltage low. Au7o has documented this code across 1 Mercedes-Benz model — most commonly on Sprinter. 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. Typical repair costs on Mercedes-Benz range from $200 to $700, depending on the specific model and root cause.
Common Causes of P0562
- •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
P0562 on Mercedes-Benz by Model
Mercedes-Benz Sprinter(1 issue)
- Alternator-to-Starter "Y-Cable" Fusible Link Corrosion (Low Charging Voltage, No-Start)2007-2013
On NCV3 Sprinters the heavy charging cable runs from the alternator to the starter stud and then on to the battery, with a fusible link spliced into the harness (the so-called Y-cable). The splice is covered only by heat-shrink that is not truly watertight. Under sustained high-current charging the splice heats up, the shrink tube splits, and road salt and moisture attack the exposed conductor. The link corrodes and its resistance climbs, so the battery never sees full alternator output. Owners report chronic low system voltage, weak cranking, batteries that die early, and alternators condemned and replaced when the cable was the actual fault. Because the fault is resistive rather than open, it often throws no code and voltage measured at the alternator looks fine while voltage at the battery is a volt or more lower.
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What does P0562 mean on Mercedes-Benz?▼
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 Mercedes-Benz specifically, this code is documented across 1 model.
What causes P0562 on Mercedes-Benz vehicles?▼
Common causes on Mercedes-Benz: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0562 on a Mercedes-Benz?▼
Repair costs on Mercedes-Benz range from $200 to $700, depending on the specific model and root cause.
Which Mercedes-Benz models have P0562 documented?▼
Au7o has documented P0562 on 1 Mercedes-Benz model: Sprinter.