Ignition unit (ballast) in xenon headlights Nissan Murano - a key element of the lighting system, responsible for generating a high-voltage pulse to ignite the gas in the lamp. Its malfunction is manifested by dim light, flickering or complete failure of the headlight, which not only impairs visibility, but also creates the risk of an accident. Owners Murano first (Z50, 2003–2007) and second (Z51, 2008–2014) generations often encounter this problem after 100–150 thousand kilometers, when factory units fail.

Unlike halogen lamps, xenon lamps require a stable voltage 20,000–25,000 V for ignition and 85 V to maintain combustion. The ignition unit converts the onboard current 12 V within these parameters, and its failure may be due to overheating, short circuit or wear of electronic components. In this article we will look at how diagnose the problem yourself, select an analogue according to the article number and replace the unit without contacting service.

Signs of a malfunctioning ignition unit on a Nissan Murano

The first symptoms of a problem are often ignored until the headlight stops working altogether. Pay attention to the following signals:

  • 🔦 The headlight does not light up the first time - it takes several attempts to turn on the low/high beams.
  • 💡 Flickering or dim light — the lamp lights up, but only shines at half power or blinks at a frequency of 1–2 times per second.
  • ⚡ Clicking noises under the hood — characteristic discharge sounds are heard, but the lamp does not respond.
  • 🔥 Burning smell from under the headlight unit - a sign of overheating or a short circuit in the ballast.
  • 🚨 Error on the dashboard — the lighting fault indicator lights up (on Murano Z51 since 2010).

If the lamp burns out, the ignition unit may remain working, but in 60% of cases they “go away” in pairs. On Nissan Murano Z50 blocks were installed from the factory Matsushita (Panasonic) And Valeo, which by 2026 almost all require replacement due to the exhaustion of capacitors. On Z51 there are blocks Hella And Koito — they are more reliable, but they also do not last forever.

⚠️ Attention: If after replacing the lamp the headlight starts working, but a week later it goes out again, the problem is in the ignition unit. A new lamp paired with a faulty ballast will fail in 1–2 months.

Articles and analogues of ignition units for Murano Z50/Z51

The selection of spare parts depends on the year of manufacture and type of headlights. On Murano Z50 (2003–2007) xenon blocks with article numbers were installed:

  • 📌 26110-4M000 (right) and 26110-4M001 (left) - original Matsushita.
  • 📌 26110-4M005 - analogue from Valeo (interchangeable with the original).

For Murano Z51 (2008–2014) current:

  • 📌 26110-4M100 (right) and 26110-4M101 (left) - original Hella.
  • 📌 26110-4M105 - blocks Koito, were installed on restyled versions.

The cost of original blocks is from 8,000 to 12,000 rub. per piece. High-quality analogues (Bosch, Philips, Sylvania) will cost RUB 3,500–6,000. Be careful with cheap Chinese ballasts (price up to 2,000 rubles) - they often cannot withstand the load and burn out after 3-6 months.

Article Manufacturer Compatibility Average price, rub.
26110-4M000 Matsushita (Panasonic) Murano Z50 (right) 10 500
26110-4M100 Hella Murano Z51 (right) 11 200
26110-4M005 Valeo Murano Z50 (interchangeable) 5 800
XE-BAL35W Bosch (analog) Z50/Z51 (universal) 4 200
⚠️ Attention: When purchasing an analogue, check the compatibility lamp power (35W or 50W) and connector type. On Murano Z51 Since 2012, units with a modified connector have been installed - they are not suitable for earlier versions!
📊 What ignition unit is on your Murano?
  • Original (not changed yet)
  • There are already analogues (Bosch, Philips, etc.)
  • Chinese non-original
  • I don't know, haven't checked

How to check the ignition unit with a multimeter

For diagnostics, you will need a multimeter with a mode for checking resistance and voltage. Disconnect the battery before starting work to avoid short circuit. Verification algorithm:

  1. Remove the ignition unit — it is located on the back of the headlight, secured with two bolts or clips.
  2. Ring the chain:
    • 🔧 Connect the probes to + And – block contacts (12V power supply). Resistance must be within 0.5–1.0 Ohm.
    • 🔧 Check the output voltage at the lamp connector - when the ignition is on, it should be ~85 V (combustion support).
  • Visual inspection - cracks on the case, swollen capacitors or traces of melting indicate a malfunction.

    • If the unit does not produce voltage or the resistance tends to infinity, it is faulty. Pay attention to the connector: Oxidized contacts can simulate block failure. Clean them with alcohol or a special liquid Contact Cleaner.

    Disconnect the battery|Take a photo of the location of the connectors|Check the circuit with a multimeter|Clean the headlight contacts from oxidation|Select a unit according to the article number-->

    Step-by-step instructions for replacing the ignition unit

    Replacing ballast with Nissan Murano does not require special skills, but will require accuracy. Opening hours - 30–40 minutes for one headlight. Tools:

    • 🔧 Socket wrench on 10 mm.
    • 🔧 Screwdriver with a flat tip.
    • 🔧 Plastic ties for fastening wires.

    Procedure:

    1. Remove the negative battery terminal and wait 10 minutes - this will discharge the capacitors in the ignition unit (voltage up to 25,000 V dangerous!).
    2. Remove the headlight:
      • On Murano Z50 Just snap off the 3 plastic clips.
      • On Z51 You will need to unscrew 2 bolts with a socket wrench.
  • Disconnect the connectors from the ignition unit and lamp. Don't pull the wires! — use a flat-head screwdriver to carefully release the latch.
  • Install a new block, secure it with standard bolts and connect the connectors in the reverse order.
  • Check the headlight operation Before assembly - turn on the low beam and make sure that the lamp lights up without flickering.

    • On Murano Z51 with the system AFS (adaptive light) after replacing the unit, it may be necessary to reset errors via a diagnostic scanner (for example, Launch X431). Without this, the headlight will work in emergency mode.

    What should I do if the headlight does not light up after replacement?

    1. Check the polarity of the connectors - reversed “+” and “–” will lead to failure.

    2. Make sure the lamp is working properly (test it with a multimeter).

    3. Inspect the fuse F37 (10A) in the fuse box under the hood - it is responsible for the xenon circuit.

    4. If the problem persists, check the wiring from the ignition unit to the lamp for a break (often frays near the headlight mount).

    Common replacement mistakes and how to avoid them

    Even experienced car owners make mistakes that lead to repeated breakdowns. Let's consider typical cases:

    • ❌ Ignoring polarity - if you mix it up + And – on the power connector, the unit will burn out the first time you turn it on.
    • ❌ Buying a unit without checking the article number - for example, a block from Murano Z50 not suitable for Z51 due to different connectors.
    • ❌ Replacing only one block - if the second headlight has an old ballast, it will fail in the near future (it is recommended to replace it in pairs).
    • ❌ Using sealant during installation — the ignition unit must “breathe”, otherwise it will overheat.

    Another common problem is error B2600 (xenon lamp malfunction)which lights up after replacement. The reason lies in the incompatibility of the unit with the diagnostic system Murano. Solution:

    • 🔧 Install deception resistor (resistance 6.8 Ohm) into the wire gap between the block and the lamp.
    • 🔧 Programmatically disable xenon control via the diagnostic connector (requires a scanner with support Nissan Consult).
    💡

    If, after replacing the unit, the headlight lights up with a delay of 2-3 seconds, this is normal. The ballast needs time to heat up the gas in the lamp. If the delay is more than 5 seconds, check the on-board voltage (must be at least 11.8 V).

    Cost of service replacement vs self-repair

    Prices for replacing the ignition unit in car services vary depending on the region and status of the service station:

    Service type Cost of work (for 1 block), rub. Opening hours
    Official dealer Nissan 3 500–5 000 1–1.5 hours
    Independent car service 1 500–2 500 40–60 minutes
    Mobile electrician (onsite) 2 000–3 000 1 hour
    Self-replacement 0 (block cost only) 30–40 minutes

    The savings when repairing yourself are obvious, but consider the risks:

    • 💸 Warranty — the service provides a guarantee on work (usually 6–12 months).
    • 🔧 Diagnostics — the technician will check related problems (fuses, wiring).
    • 📋 Reset errors — if you don’t have a scanner, you’ll have to go for diagnostics after replacing it.

    If you decide to change blocks yourself, buy a spare fuse F37 - it often burns out if there is a short circuit during connection.

    💡

    Replacing the ignition unit yourself is justified if you are confident in your skills and have a multimeter to check. Otherwise, the savings are 2,000–3,000 rubles. It's not worth the risk of damaging the car's electrical system.

    FAQ: Frequently asked questions about Nissan Murano ignition units

    Is it possible to install LED lamps instead of xenon lamps with ignition units?

    Technically yes, but this illegally - LEDs are not certified for use in headlights Murano (according to GOST R 51709-2001). In addition, an ignition unit is not needed for LED lamps, and their installation will require modifications to the optics (which is prohibited by traffic regulations). Risks: blinding oncoming drivers and a fine of 500 rubles. according to Art. 12.5 Code of Administrative Offences.

    Why did the new ignition unit burn out after a month?

    Reasons:

    • 🔋 Unstable voltage of the on-board network (check the generator and battery).
    • 💡 Faulty lamp - if it starts to “die”, the unit is overloaded.
    • 🔌 Poor contact in connectors - oxidation or backlash causes voltage surges.

    Solution: replace the lamp, clean the contacts and check the voltage at the battery terminals (should be 13.8–14.4 V with the engine running).

    How to distinguish an original ignition unit from a fake?

    Signs of the original:

    • 🏷️ The manufacturer’s article number and logo are printed on the case (Hella, Matsushita).
    • 🔧 Block weight - the original weighs 300–400 g, the fake is lighter (200–250 g).
    • 🔍 High-quality board soldering - without solder drips or burnt tracks.
    • 📦 Packaging with a hologram and a certificate of conformity.

    Counterfeits are often sold without a box or with blurred markings.

    Do I need to replace ignition units in pairs?

    Recommended, but not required. If the second unit is working and its age does not exceed 3–5 years, only the faulty one can be replaced. However, please note:

    • 🔄 The old unit may fail in the near future (resource ~100 thousand km).
    • 💡 Lamps in a pair wear out equally - if one burns out, the second will not last long.
    • 🎨 Different light intensity from new and old blocks worsens visibility.

    By replacing as a pair, you will save on diagnostics and work in the future.

    Is it possible to repair the ignition unit?

    Theoretically, yes - most often capacitors or transistors fail. However, repairs are justified only for premium blocks (Hella, Bosch). The cost of work (from 2,000 rubles) is comparable to the price of a new analogue, but there is no guarantee for repairs. Conclusion: for Murano It’s cheaper and more reliable to buy a new unit.