Common Mercedes A-Class Radio Code Issues
Many owners encounter radio code issues on their A-Class after electrical work.
Below are the most frequent situations when this can happen.
Lock After a Battery Replacement
When the battery is removed, the Mercedes A-Class radio locks automatically.
This security feature is designed to prevent theft by disabling the radio after power loss.
Other Scenarios
- After a jump-start, the radio may lose power and request a radio code.
- When the head unit is removed, it usually locks automatically.
- If a fuse is pulled, the radio can lock itself.
- After an ECU reset, software update, or electrical repair, some Mercedes A-Class radios ask for a code.
Can I get a Free Mercedes A-Class Radio Code?
Want free Mercedes A-Class Radio Code? Actually, you may find it.
In few cases, the code may already be available in the vehicle or in the documentation.
Check these places to save time and money before using an online generator.
Below are the simplest places to look.
Look for it in the Vehicle Itself
- In the radio manual, often on a separate code card.
- In the vehicle documentation provided with the car.
- On the head unit casing if the unit was previously removed.
- On a label in the door pillar.
- Near the boot panel, where some manufacturers place radio labels.
Can the Dealer Get You the Code?
A Mercedes dealer can usually retrieve the security code using your A-Class's vehicle identification number.
In most cases, you need to visit or contact them and show vehicle documents.
When it is verified, they can generate the original anti-theft code for your radio.
Disadvantages:
- You usually need to visit in person and bring vehicle paperwork.
- Dealers often charge a fee for the lookup service and it's sometimes more than 100$.
- The process can take days depending on the model and database.
- Some older Mercedes A-Class radios may not be supported.
How to Find the Serial N. on a A-Class's Radio
To get the correct unlock code, you first need the radio serial number.
Depending on your A-Class, you can see it on the screen or find it on the radio unit itself.
Common abbreviations are S/N, SN, Serial, Serial Num., Serial Number...
These are the easiest ways to find it:
1. Viewing A-Class's S/N on the Display
Unfortunately, on Mercedes A-Class radios the serial number is not shown on the screen.
In that case, you'll need to remove the radio unit and check the sticker on the back of the radio.
2. How to Find the S/N on the Radio Unit's Sticker
To find the serial number, you'll need to take out the radio unit out.
- Start by turning off the ignition and removing the trim panel.
- Next, release the clips and slide the radio out to check the sticker on the back of the radio. Be careful not to damage the cables.
- Write down full serial number precisely and then come back to the website.
- Know that serial number and part number are not equal. You can find both on the unit, but you only care for the first one.
Example: Mercedes A-Class serial number label location
Common Serial Number Formats on Mercedes A-Class Radios
Your Mercedes A-Class radio serial number may start with:
BEAL
How to Enter the Radio Code on Mercedes A-Class
Once you have the Mercedes's security code, you can type it in using the infotainment controls.
Most radios display "ENTER CODE", "----" or "XXXX" message when they are locked.
You typically use the preset buttons to input the code.
After entering the full code, the radio will confirm the entry.
Try not to make mistakes, because too many wrong attempts can temporarily lock the radio.
It will allow you a few missed shots before showing a LOCKED message.
You can reset the lockout by leaving the radio on for an hour or a set waiting period.
Why Choose Our Mercedes A-Class Radio Code Generator Service?
Our Mercedes A-Class radio code lookup is designed to save time.
Unlike traditional dealer lookup, this method requires no paperwork and can be done from home in minutes.
It's a faster and cheaper alternative for drivers who need their radio unlocked quickly.
The Dealer's VIN Lookup vs FindRadioCode
- Delivery time: May take days, while FindRadioCode is almost instant 95% of the time.
- Availability: Dealers work Mon - Fri, while our service is always available.
- In-person visit: Lookup can require an appointment, while FindRadioCode works online.
- Pricing: It often costs over $100, while our service starts from 9.99 USD.
- Refund policy: Dealers usually offer limited refunds, while we include a full refund policy.
A-Class's Radio Code FAQs
Many of their radios use a security code, but not every model year or radio type requires one.
It depends on the head unit and production year.
Free radio codes are rarely available.
Some manuals may help, but most codes require serial number lookup.
The only free way would be to check your vehicle and its glovebox to see if you already possess the code.
Yes, each radio unit has its own security code. If you install a used radio, you'll need the code for that specific unit.