Citroën C4 I (2004–2010)Electrical system12 V battery
Flat battery as a cause of breakdown assistance call-outs in the Citroën C4 I
CarWiki cites a flat battery as the main cause of breakdowns on the first-generation C4 between 2006 and 2009, along with some cases of a faulty starter motor in 2006.[1]
Why this rating?
Medium severity: It can leave you stranded or get worse if ignored, without destroying the engine.
Frequency occasional: A single source, with no figures; it is cited for several years but without a percentage.[1]
Symptoms
- Flat battery and starting problems.[1]Battery goes flat: other faults that cause it · Monitor
Why it happens
Affected years and cars
How much it costs to repair
Includes: Repair or replacement of the affected part, including labour.[1]
We have not found a reliable reference price in euros for Spain.
Prices in Spain, including VAT. A workshop hour costs on average €38–66 at independent garages and €77–134 at dealerships in Spain, depending on the region and the brand. How we calculate costs
How to check for it before buying a used car
- Check the condition of the battery and that the car starts first time.
Parts for this fault
The affected part, searched for your car or engine. Use the diagnosis to confirm what is failing before you buy it.
Affiliate links: if you buy from these shops, MotorFiable may receive a commission at no cost to you. Check compatibility against the registration plate or VIN before ordering. Affiliate links
How to prevent it
- Replace the battery when it loses capacity.
Recalls, campaigns and claims
As of 29 October 2026, we have no record of recalls, campaigns or extended manufacturer warranties for this fault. Check with an official dealer using the chassis (VIN) number: they will tell you whether the car has any outstanding campaign.
What owners say
Frequently asked questions
Does it affect all years?
The source mainly cites the years 2006 to 2009.[1]
What can you do now?
We will put you in touch with a partner only if you authorise it in the form.
Other faults of the Citroën C4 I
- High severityFrequency: OccasionalBodywork and interiorRecall: the bonnet catch could openAccording to CarWiki, the German KBA lists a recall of the C4 because the bonnet catch could open unexpectedly; the source gives no dates or batch.
- High severityFrequency: OccasionalBrakesRecall: brake servo faultCarWiki lists among the KBA recalls one for the brake servo, which could fail; the source gives no dates or batch.
- Medium severityFrequency: CommonSuspensionWear of shock absorbers, ball joints and wheel bearings on the front axleIn a reliability survey with 573 responses on the Citroën C4 (2004-2010), the front shock absorbers, ball joints and wheel bearings add up to 89 cases, with knocking, vibration and uneven tyre wear as the most cited symptoms.
- Medium severityFrequency: OccasionalGearbox and clutchPremature wear of the clutch and flywheelIn the same survey, the clutch accounts for 61 cases: it can slip, judder or wear out sooner than expected, especially on the more powerful diesel versions, and several testimonials link the problem to deterioration of the flywheel.
- Medium severityFrequency: OccasionalElectronics and infotainmentElectronic faults in the COM2000 module and the BSI unitWith 76 cases in the same survey, electronic faults are another of the most cited systems: indicators, horn or the ABS, ESP and airbag warning lights can fail because of a fault in the BSI, the unit that centralises much of the electronics, or in the COM2000 stalk, often intermittently.
- Medium severityFrequency: OccasionalBrakesScored and rusted brake discsAccording to CarWiki, TÜV inspectors often find grooved and rusted brake discs on the first-generation C4, although the source says the braking system is generally reliable.
- Low severityFrequency: OccasionalElectrical systemFailure of the electric windows, door locks and bootIt is the most cited problem in a reliability survey with 573 responses on the C4 (2004-2010): the electric windows, locks, door handles and boot add up to 97 cases, the system with the most incidents in the whole sample.
The faults of its engines are on the Citroën C4 I page.
The same problem in other cars
- High severityFrequency: OccasionalBMW Serie 6 E63/E64Battery drain and loose positive cableThe battery and alternator are frequently cited by Fiches-auto, and there is a recall for the battery's positive cable, which can work loose.
- High severityFrequency: OccasionalFord Galaxy IIIAcid leak from the 12 V battery (campaign 18P11)According to the fiches-auto.fr page, campaign 18P11 (August 2019) covers Galaxies built between February 2014 and February 2019 over a risk of battery acid leaking, which can worsen over time.
- High severityFrequency: OccasionalFord Mustang Mach-EElectronic door latches that lock when the 12 V battery is flatYes: in 2025 Ford recalled the Mustang Mach-E (2021 to 2025) because, if the 12 V battery drains unexpectedly, the electronic door latches on the front doors keep their last state and can leave someone locked out or locked in. More than 316,000 units are affected worldwide and it is fixed with software.
- High severityFrequency: CommonHyundai-Kia E-GMP (Ioniq 5, Ioniq 6, EV6)Faulty ICCU: 12 V battery drains, charging fails and power is lostThe ICCU, which combines the on-board charger and the converter that powers the 12 V system, can fail on the Ioniq 5, Ioniq 6 and EV6: it cuts AC charging, drains the 12 V battery and, in the worst case, the car loses power and stops. Hyundai and Kia have recalled units built from 2021 to 2024.Repair: €2,000–€5,000
- Medium severityFrequency: Very frequent1.5 Hybrid12 V battery going flat while parkedYes: on the hybrid Yaris and Yaris Cross, the 12 V battery can go flat within a few days while parked because of the residual draw of modules such as eCall or keyless entry. It is fixed with a software update or, if the battery is already damaged, by replacing it.
- Medium severityFrequency: Very frequent1.8 HybridThe 12V battery drains on the C-HR and Corolla hybridsYes: on the first-generation C-HR hybrid, the 12V battery is one of the most frequently reported faults: it runs flat after a few days standing or on short trips, and the car will not start. The ADAC and Toyota itself point to it as a cause of faults on the C-HR and Corolla.
All faults with the 12 V battery (98)Cars with the most electrical system problems
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Sources
Every fact on this page links to its source. If you find an error, let us know.
- Probleme mit dem Citroën C4: typische Schwachstellen, Mängel und RückrufeCarWiki · Motoring press · consulted 29 October 2026 · in German