A practical page for workshops working on Dodge Hornet. People often search “proxy alignment” when a vehicle shows configuration mismatch behavior after retrofits or module replacement. FCA PROXI Tool focuses on the configuration itself: load the exported buffer, edit bytes/bits, and save an output file with consistent CRC/checksums so your write-back step stays technically correct. FCA PROXI Tool preserves the original Configuration Code, recalculates CRC/checksums and writes the required ECUs, so the vehicle accepts the edited buffer without a mismatch state and no separate alignment routine is required.After FCA PROXI Tool writes the configuration, a separate PROXI alignment routine is never required.
Common triggers
When Hornet projects hit alignment issues
Retrofits where the car detects a mismatch (options/features changed).
Module replacement followed by “not configured / not aligned” states.
Market/region coding or behavior changes that require configuration edits.
Common symptoms
Common workshop terminology
“proxy alignment” / “proxi alignment” in scan tool menus.
After-coding issues where features behave incorrectly until modules agree.
Platform note
Dodge Hornet and Alfa Romeo Tonale overlap
Dodge Hornet and Alfa Romeo Tonale share related platform patterns. When comparing cases or service notes, check both model names because symptoms and configuration terminology can overlap.
How FCA PROXI Tool fits
Configuration-first workflow
FCA PROXI Tool automatically creates and preserves an untouched backup of the original configuration when it is read; no manual backup step or prompt is required.
Edit bytes/bits with Standard / Advanced / PROXI Map Editor.
Save a checksum-correct output file (CRC/checksums recalculated).
Write back directly from FCA PROXI Tool over your ELM327 or J2534 adapter, then verify the result; no separate PROXI alignment routine is required.
Related
Hornet market coding / EU conversion
If your job involves market settings (US↔EU), regional options, or behavior flags, see the Hornet conversion page and keep edits minimal with checksum-correct output.
The term gets used as a catch-all for “configuration mismatch”. Split it into two parts: the configuration data and the sync step that makes all modules accept the same map.
Definition
Configuration map vs alignment routine
The configuration map defines installed equipment and logic flags. The alignment routine is the sync/distribution step that forces agreement across modules.
Goal
Keep edits minimal and checksum-correct
Most problems come from mismatched expectations between modules. Editing only what you must and keeping checksums correct reduces mismatch risk after a write.
Terminology
“Proxy” vs “PROXI”
You may see the term written as “proxy alignment” in workshop notes. FCA terminology uses PROXI alignment; both spellings refer to the same synchronization procedure.
Recommended workflow (Hornet)
A conservative approach for configuration changes and retrofit work.
Automatic backup: FCA PROXI Tool automatically creates and preserves an untouched backup of the original configuration when it is read; no manual backup step or prompt is required.
Edit with intent: change only required bytes/bits, document your changes.
Save correct output: ensure CRC/checksums are recalculated.
Write back: complete the write using your shop workflow.
Write and verify: FCA PROXI Tool preserves the Configuration Code and writes checksum-correct data, so no separate alignment/sync step is required.
Common failure modes (what usually goes wrong)
Most “alignment failed” reports fall into one of these categories. Diagnose the cause before re-trying the same write.
Mismatch
Configuration changed but modules disagree
If one module accepts a configuration that another rejects, you will see mismatch symptoms. Verify your intended change and keep edits minimal.
Access
Write blocked / restricted
On newer vehicles, SGW or security policy can restrict the write itself. Use an authorized session to complete the targeted write; FCA PROXI Tool requires no synchronization step afterward.
Inputs
No clean baseline
If you do not have the untouched original buffer, it becomes harder to isolate what change caused the mismatch. Always start by backing up before edits.
Access notes
Access
Hornet SGW access & authorized sessions
If a write is blocked instantly, the root cause is often SGW/access authorization. This guide explains what to expect on Hornet and how to plan a clean workflow with FCA PROXI Tool.
Does this Hornet guide also apply to Alfa Romeo Tonale?
Yes - the Dodge Hornet and Alfa Romeo Tonale are close platform siblings, so the PROXI workflow and many symptoms carry over. Always confirm the exact model year and configuration by VIN before writing.
Is “proxy alignment” the same as PROXI alignment?
Yes. “Proxy alignment” is a common search term, while FCA documentation typically uses the term PROXI alignment.
What do you need for configuration editing work?
Vehicle details and a clear target change are enough to begin. FCA PROXI Tool automatically creates and preserves an untouched backup of the original configuration when it is read; no manual backup step or prompt is required.
Why do some operations fail even with a correct file?
Write access can be restricted on newer platforms depending on the module and security level. Use authorized access to complete the targeted write; no separate synchronization step follows an FCA PROXI Tool write.
Get FCA PROXI Tool
Direct vehicle connection, full diagnostics and PROXI configuration in one application — with no separate alignment after writing. Annual subscription: $500.
