Working on a 2014–2020 Toyota Aygo, Citroën C1, or Peugeot 107/108 with All Keys Lost (AKL)?

These three city cars share the same platform and immobilizer architecture. In an AKL situation, programming a new key is more complex than normal OBD learning — and in most cases requires dashboard removal to access the immobilizer box.

This guide explains two professional methods to complete the job successfully.

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🚗 Vehicle Coverage

Supported models (2014–2020):

• Toyota Aygo
• Citroën C1
• Peugeot 107
• Peugeot 108

These vehicles were developed under a joint venture and use similar immobilizer systems.

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🔐 Immobilizer Location

In an All Keys Lost situation:

• The immobilizer box and door locking module are located behind the instrument cluster / dashboard
• On RHD models, access requires removing the upper dashboard panel
• The plastic cover behind the cluster hides the immobilizer unit

⚠️ Important:
You must remove the top section of the dashboard to access the immobilizer and retrieve EEPROM data.

 

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Method 1 – Immobilizer Read + Autel Simulation (Faster Method)

This method avoids full immo box disassembly and saves time.

🔧 Steps:

1. Cut key blade (Keyway: TOY48)
   • Use Lishi pick tool
   • Or decode wafers after removing lock
2. Remove dashboard and access immobilizer
3. Read immobilizer data using:
   • Autel G-Box
   • Compatible Autel IMMO tool
4. Simulate master key
5. Learn new key using Autel KM100

This approach reduces labor compared to EEPROM desoldering.

 

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Method 2 – EEPROM Read with VVDI Prog + Tango (Advanced Method)

This is the traditional and most reliable AKL method.

 

🔧 Steps:

1. Remove immobilizer box completely
2. Read EEPROM using VVDI Prog
3. Load EEPROM dump into Tango key programmer
4. Generate key data
5. Write key to chip

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🧠 Important Chip Information (Very Critical)

Many technicians fail here.

For Aygo / C1 / 107 / 108:

❌ Xhorse Super Chip XT27A does NOT work directly
❌ VVDI2 4D70 generation does NOT work
❌ XT27 generating as 4D70 will fail

✅ Only Original 4D70 chip works correctly with Tango

Recommended Workflow:

1. Use an original 4D70 chip
2. Generate key in Tango
3. Program key
4. Optional:
   • Use junkyard original Aygo key
   • Program with Tango
   • Clone to XT27 for future use

This ensures stability and avoids repeat jobs.

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⚙️ Tools Required

• Autel IM608 / KM100 + G-Box
• VVDI Prog
• Tango
• TOY48 key blade
• Original 4D70 chip

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💡 Which Method Should You Choose?

Method	Skill Level	Speed	Risk	Recommended For
Autel Simulation	Intermediate	Faster	Medium	Mobile locksmith
VVDI + Tango	Advanced	Slower	Low	Workshop technicians

If you frequently work on PSA / Toyota joint-platform vehicles, EEPROM method is more reliable long-term.