How to Replace the Battery in a Citroën C4 Picasso Remote?
Replacing the battery in a Citroën C4 Picasso remote involves locating the battery compartment, removing the old battery, and inserting a new CR1620 3V lithium cell. Ensure proper orientation and test the remote afterward. This process typically takes 2-3 minutes and restores key functions like locking/unlocking and trunk activation.
How Do You Open the Citroën C4 Picasso Remote Battery Compartment?
To open the battery compartment, slide the physical key out of the remote. Use a flat tool (e.g., coin or screwdriver) to twist and separate the two halves of the key fob. The battery slot is located near the key blade housing. Handle components gently to avoid damaging internal circuitry or rubber seals.
| Tool | Advantage | Risk Level |
|---|---|---|
| Plastic spudger | No scratching | Low |
| Coin (€1/£1) | Wide availability | Medium |
| Precision screwdriver | Better leverage | High |
Apply pressure gradually near the seam – excessive force may break the plastic clips. Some 2015-2018 models feature reinforced housings requiring 2.5N·m of torque to open. If resistance persists, warm the fob slightly (below 40°C) to expand the casing.
What Battery Type Does the Citroën C4 Picasso Remote Use?
The Citroën C4 Picasso remote requires a CR1620 3V lithium coin cell. This 16mm-diameter battery provides optimal voltage for RF signal transmission. Avoid substitutes like CR2016 or CR2032, which may fit physically but compromise contact pressure and operational lifespan. Genuine Panasonic or Energizer cells are recommended for consistent performance.
| Battery Model | Capacity (mAh) | Thickness (mm) |
|---|---|---|
| CR1620 | 68-78 | 2.0 |
| CR1632 | 130 | 3.2 |
| CR2016 | 90 | 1.6 |
Premium lithium cells maintain 3V output for 95% of their lifespan, unlike alkaline alternatives that gradually decline. Storage temperature significantly impacts performance – batteries kept above 30°C lose 20% capacity annually. For models with keyless entry (2016+), consider replacing batteries every 18 months due to higher power demands from continuous RF transmission.
“Modern key fobs like the Citroën C4 Picasso’s use rolling encryption codes. While battery replacement seems simple, improper handling can reset security protocols. Always perform resynchronization in a Faraday cage environment if possible—especially for vehicles with keyless entry systems. At Redway, we recommend dielectric grease application on battery contacts to prevent oxidation in humid conditions.”
FAQs
- Does the Citroën C4 Picasso have a keyless entry system?
- Yes, certain trim levels feature keyless entry. These systems require more frequent battery replacements (every 18-24 months) due to constant RF communication with the vehicle’s antennas.
- Can a dead key fob battery drain the car battery?
- No—the remote operates on standalone power. However, faulty ignition switch contacts in advanced keyless models might create parasitic draw. If experiencing battery drain, consult a dealership for system diagnostics.
- Are aftermarket batteries safe for Citroën remotes?
- Reputable brands (Duracell, Varta) meet OEM specifications. Avoid unbranded cells—their inconsistent voltage curves (2.8-3.2V vs stable 3.0V) may trigger low-battery warnings prematurely. Check for ISO 9001 certification on packaging.