Automotive keys are a vital a part of our day by day lives. We use them to unlock our vehicles, begin our engines, and even open our trunks. However what occurs when the battery in our automobile key dies? Don’t be concerned, changing the battery in a Mercedes-Benz secret’s a comparatively easy course of that may be performed in just some minutes.
First, you will want to assemble just a few instruments. You will want a small screwdriver, a brand new battery, and a clear fabric. Upon getting your instruments, you’ll be able to start the method of changing the battery. Begin by eradicating the again of the important thing fob. This may be performed by inserting the screwdriver into the small slot on the again of the fob and gently prying it open. As soon as the again is eliminated, you will see the battery. Use the screwdriver to rigorously take away the outdated battery and exchange it with the brand new one. Be sure that to insert the brand new battery within the appropriate path. As soon as the brand new battery is in place, put the again of the important thing fob again on and screw it into place.
Now that you have changed the battery, check the important thing fob to ensure it is working correctly. Press the buttons on the fob and ensure that the lights flash and the automobile responds. If the important thing fob will not be working correctly, examine to ensure that the battery is inserted accurately. If the important thing fob nonetheless doesn’t work, chances are you’ll have to take it to a locksmith or dealership to have it repaired.
Figuring out the Key Battery Location
Accessing the Key Battery
The important thing battery for a Mercedes-Benz is usually situated inside the important thing fob. To entry the battery, you will want to find the important thing launch button and press it to launch the important thing from the fob.
Finding the Key Fob
The important thing fob is normally hooked up to the important thing ring and should have a Mercedes-Benz brand or the three-pointed star emblem on it. It may be made of assorted supplies, together with plastic, steel, or leather-based.
Upon getting recognized the important thing fob, you will want to find the important thing launch button. This button is usually situated on the facet of the fob and should have an arrow or triangle image subsequent to it.
Urgent the important thing launch button will launch the important thing from the fob. The important thing battery is normally situated inside the important thing itself, behind a small cowl or panel.
Eradicating the Key Battery Cowl
Relying on the Mercedes-Benz key mannequin, the important thing battery cowl could also be secured with a screw or a snap-on mechanism.
| Key Sort | Battery Cowl |
|---|---|
| Normal Key | Screwed-on cowl |
| Good Key | Snap-on cowl |
If the quilt is screwed on, you will want a small screwdriver to take away it. If the quilt is snap-on, gently pry it open with a small flathead screwdriver or a skinny instrument.
As soon as the quilt is eliminated, it is possible for you to to entry the important thing battery. The battery is normally held in place by a small spring or clip.
Gathering the Obligatory Instruments
To efficiently exchange the important thing battery in your Mercedes-Benz, you will want sure important instruments. At first, guarantee you will have a brand new CR2025 battery, which is the usual battery sort utilized in Mercedes-Benz key fobs. Moreover, you’ll require the next instruments:
Flathead Screwdriver
A flathead screwdriver is essential for prying open the important thing fob. Select one that’s small and skinny sufficient to suit into the slim grooves of the important thing fob. A precision screwdriver set is beneficial, because it gives quite a lot of sizes to accommodate totally different key fob fashions.
Key Extractor Software
In case your Mercedes-Benz key fob has an emergency mechanical key, you will want a key extractor instrument. This instrument helps to take away the mechanical key from the important thing fob to realize entry to the battery compartment. It’s a specialised instrument that’s particularly designed for Mercedes-Benz key fobs.
| Software | Goal |
|---|---|
| CR2025 Battery | Alternative battery |
| Flathead Screwdriver | Prying open the important thing fob |
| Key Extractor Software | Eradicating the mechanical key (if relevant) |
Safely Opening the Key Casing
Step 1: Establish the Launch Button
Find the small launch button on the facet or again of the important thing fob. It is normally flush with the floor and should have a logo or arrow subsequent to it.
Step 2: Apply Strain and Slide
Concurrently press and maintain the discharge button whereas gently sliding the important thing casing open within the path indicated by the button.
Step 3: Rigorously Separate the Halves
As soon as you’ve got efficiently slid the casing open, be further cautious when separating the 2 halves. Delicate inner parts and is derived could also be current, so deal with them with care to keep away from injury.
|
Key Sort |
Battery Sort |
Battery Orientation |
|---|---|---|
|
Flip Key |
CR2032 |
Constructive facet (+) |
|
Good Key |
CR2025 |
Adverse facet (-) |
|
Keyless Comfort System (KCS) |
CR2016 |
Constructive facet (+) |
Eradicating the Previous Battery
Upon getting situated the important thing battery, it is advisable take away the outdated battery. Here is the right way to do it:
-
Pry open the important thing fob. You should utilize a small flathead screwdriver or a key to pry open the important thing fob. Watch out to not injury the fob.
-
Find the battery. The battery is normally situated inside the important thing fob, close to the circuit board.
-
Take away the battery. Use a small flathead screwdriver or a key to softly pry the battery out of the fob.
-
Clear the battery contacts. Use a cotton swab or a clear fabric to scrub the battery contacts inside the important thing fob. It will assist guarantee a very good reference to the brand new battery.
Battery Alternative Desk
| Mercedes-Benz Key Mannequin | Battery Sort |
|---|---|
| Good Key | CR2025 |
| Flip Key | CR2016 |
Inserting the New Battery
5. Inserting the brand new battery:** Now that the outdated battery is eliminated, it is time to insert the brand new one. Begin by holding the battery with the detrimental terminal going through you, and align it with the battery compartment. Gently press down on the battery till it makes contact with the terminals. Then, rigorously press the optimistic terminal into place, and safe the battery with the retaining clip.
- Take note of the polarity:** Make it possible for the optimistic terminal on the battery matches the optimistic terminal within the battery compartment. Incorrect polarity can injury your automobile’s electrical system.
– Double-check the match:** Earlier than securing the battery, double-check that it matches snugly within the compartment and would not transfer whenever you press on it.
– Tighten the retaining clip:** Rigorously tighten the retaining clip to safe the battery in place. Overtightening can injury the clip or the battery, so use warning.
Reassembling the Key Casing
Step 6: Reattach the Key Blade (Optionally available)
Should you eliminated the important thing blade throughout disassembly, now’s the time to reattach it. Maintain the important thing blade by the bottom and gently insert it into the slot on the important thing casing. Press firmly till it clicks into place. Chances are you’ll have to align the important thing blade with the casing by turning it barely as you insert it.
Step 6.1: Test if the Key Locks and Unlocks
As soon as the important thing blade is reattached, check the important thing to make sure it locks and unlocks your Mercedes-Benz. Insert the important thing into the door lock and switch it to the lock place. Then, flip it to the unlock place. The door ought to reply easily and with none resistance. Repeat the method on the opposite doorways and the trunk or tailgate to confirm the secret’s functioning accurately.
Step 6.2: Change the Battery Cowl
Upon getting confirmed the secret’s working, exchange the battery cowl. Align the quilt with the important thing casing and gently press it into place. Guarantee the quilt absolutely snaps into place and is safe. Your secret’s now reassembled and able to use.
Testing the Key Performance
Earlier than changing the important thing battery, check the important thing performance to substantiate that the battery is certainly the issue.
To do that, maintain the important thing near your Mercedes-Benz and press the lock or unlock button. If the automobile responds, the battery is probably going nonetheless practical and chances are you’ll not want to exchange it.
If the automobile doesn’t reply, attempt urgent the button a number of instances. If the automobile nonetheless doesn’t reply, the battery could also be utterly useless and you will want to exchange it.
Extra Suggestions
Listed here are some extra ideas for testing the important thing performance:
- If in case you have a spare key, attempt utilizing that key to unlock or lock the automobile. If the spare key works, the issue is probably going with the unique key and never the automobile’s battery.
- Strive utilizing the important thing to unlock or lock the automobile from totally different distances. If the important thing solely works when it is rather near the automobile, the battery could also be weak and needs to be changed.
- If in case you have a keyless entry system, attempt utilizing the important thing fob to unlock or lock the automobile. If the important thing fob doesn’t work, the battery in the important thing fob could also be useless and needs to be changed.
Eradicating the Key Battery
Find the important thing battery by eradicating the important thing blade. Use a small flathead screwdriver or a key extractor instrument to softly pry open the important thing fob.
As soon as the important thing fob is open, determine the battery. It’s normally a small, spherical, silver battery with a mannequin quantity printed on it. Gently pry the battery out of its housing with a small screwdriver or a pair of tweezers.
Inserting the New Battery
Test the brand new battery to make sure it’s the appropriate sort and orientation. Insert the brand new battery into the housing, optimistic facet up. Gently press the battery into place till it clicks.
Reassembling the Key Fob
Reassemble the important thing fob by snapping the 2 halves again collectively. Guarantee the important thing blade is accurately aligned and inserted into the important thing fob.
Programming the Key (IfNeeded)
If the brand new battery doesn’t work, the important thing might should be reprogrammed. This course of might be carried out by a Mercedes-Benz dealership or a certified automotive locksmith.
Listed here are the steps concerned in programming a Mercedes-Benz key:
- Insert the brand new key into the ignition and switch it to the “On” place.
- Look ahead to the anti-theft system mild to show off.
- Inside 60 seconds, press and maintain the “Unlock” button on the important thing fob for 20 seconds.
- Launch the “Unlock” button and instantly press the “Lock” button for 20 seconds.
- Repeat steps 3 and 4 for the opposite key fobs.
- Flip off the ignition and look ahead to the anti-theft system mild to show off once more.
- Take away the important thing from the ignition and check out it to begin the automobile.
- If the important thing begins the automobile, the programming course of is full.
If the important thing nonetheless doesn’t work after programming, it might be essential to exchange the important thing fob or the ignition swap.
Key Battery Sort Mercedes-Benz Fashions CR2025 E-Class, C-Class, S-Class, G-Class, CLK-Class CR2032 A-Class, B-Class, CLA-Class, GLA-Class Battery Location
The important thing battery is normally situated inside the important thing fob or distant. Search for a small button or launch latch on the edges or backside of the fob. As soon as you discover the discharge, press it and pull the important thing aside to disclose the battery.
Battery Sort
Most Mercedes-Benz keys use a CR2025 or CR2032 coin cell battery. Test the battery compartment or consumer handbook for the precise sort required.
Battery Alternative Steps
- Press the discharge button or latch to open the important thing fob.
- Find the battery compartment and take away the outdated battery.
- Insert the brand new battery with the optimistic facet (+) going through up.
- Shut the battery compartment and reassemble the important thing fob.
Troubleshooting Battery Alternative Points
Battery Nonetheless Not Working After Alternative
If the important thing nonetheless would not work after changing the battery, attempt the next:
- Be sure that the brand new battery is the right sort and is inserted accurately.
- Test the battery contacts in the important thing fob and clear them if they’re soiled.
- Strive resetting the important thing by holding the unlock button for 10 seconds.
- Test if there are any unfastened or damaged parts inside the important thing fob.
- If none of those steps work, chances are you’ll have to have the important thing fob programmed by a locksmith or dealership.
Key Fob Not Opening or Closing the Automotive
If the important thing fob will not be opening or closing the automobile, attempt the next:
- Be sure that the important thing fob is inside vary of the automobile.
- Test if the automobile battery is useless or disconnected.
- Strive syncing the important thing fob with the automobile by following the directions within the consumer handbook.
- If in case you have a spare key, attempt utilizing it to open and shut the automobile.
- If none of those steps work, chances are you’ll have to have the important thing fob or automobile receiver recognized by a mechanic.
Key Fob Battery Draining Shortly
If the important thing fob battery is draining rapidly, attempt the next:
- Be sure that the important thing fob will not be getting used excessively.
- Test for any unfastened or worn parts in the important thing fob.
- Strive changing the battery with a brand new one.
- If the battery nonetheless drains rapidly, chances are you’ll have to have the important thing fob recognized by a mechanic.
Extra Security Precautions
1. Keep away from Contact with Battery Acid
The battery acid in Mercedes-Benz key fobs is extremely corrosive and might trigger pores and skin irritation and chemical burns. Put on gloves when dealing with the battery, and keep away from contact along with your pores and skin or eyes.
2. Do Not Quick Circuit the Battery
Quick-circuiting the battery may cause it to overheat and explode. Don’t contact the optimistic and detrimental terminals of the battery with steel objects, resembling instruments or jewellery.
3. Use the Right Battery
Mercedes-Benz key fobs require a selected sort of battery. Utilizing the fallacious battery can injury the important thing fob or trigger it to malfunction. Discuss with your car’s proprietor’s handbook for the right battery specs.
4. Eliminate Batteries Correctly
Used batteries needs to be disposed of correctly to stop environmental contamination. Don’t throw them away within the trash; as a substitute, recycle them at a chosen battery disposal facility.
5. Hold Batteries Away from Youngsters and Pets
Batteries might be harmful if ingested or ingested. Hold them out of attain of youngsters and pets to stop unintentional damage.
6. Do Not Retailer Batteries in Excessive Temperatures
Excessive warmth or chilly can injury batteries. Retailer them in a cool, dry place away from direct daylight.
7. Clear the Battery Contacts
Over time, the battery contacts can turn out to be soiled or corroded. Clear them with a cotton swab and rubbing alcohol to make sure good electrical contact.
8. Examine the Key Fob
Earlier than changing the battery, examine the important thing fob for any injury or put on. If there are any cracks, damaged buttons, or different issues, it might be essential to exchange the important thing fob as a substitute of simply the battery.
9. Take a look at the Key Fob
After changing the battery, check the important thing fob to ensure it’s working correctly. Lock and unlock your car, and examine the vary and performance of the buttons.
10. Extra Precautions for Good Key Fobs with Immobilizer
Good key fobs with immobilizer techniques require extra precautions:
- Use the Emergency Key: If the sensible key fob battery is useless, you should use the emergency mechanical key to unlock and begin your car.
- Keep away from Sturdy Magnets: Sturdy magnets can intrude with the immobilizer system. Hold your sensible key fob away from magnets, resembling these utilized in laptop computer circumstances or fridge doorways.
- Retailer the Key Fob Individually: To stop unintentional unlocking or beginning of the car, retailer the sensible key fob in a separate location from the car when not in use.
Change Key Battery for Mercedes-Benz
Changing the battery in your Mercedes-Benz key fob is a straightforward activity that may be accomplished in just some minutes. Listed here are the steps it is advisable observe:
1.
Find the small screw on the again of the important thing fob and use a screwdriver to take away it.
2.
Rigorously pry open the again of the important thing fob utilizing a small flat-head screwdriver or a butter knife.
3.
Find the battery and take away it from the important thing fob.
4.
Change the battery with a brand new one, ensuring that the optimistic and detrimental terminals are aligned accurately.
5.
Shut the again of the important thing fob and tighten the screw.
6.
Take a look at the important thing fob to ensure it’s working correctly.
Folks Additionally Ask
What sort of battery does my Mercedes-Benz key fob use?
Most Mercedes-Benz key fobs use a CR2025 battery.
How usually do I would like to exchange the battery in my Mercedes-Benz key fob?
The battery in your Mercedes-Benz key fob will usually final for 2-3 years.
Can I exchange the battery in my Mercedes-Benz key fob myself?
Sure, you’ll be able to exchange the battery in your Mercedes-Benz key fob your self. The steps are outlined above.
How do I do know if the battery in my Mercedes-Benz key fob is useless?
There are just a few indicators that the battery in your Mercedes-Benz key fob is useless, together with:
- The important thing fob would not work whenever you press the buttons.
- The important thing fob works intermittently.
- The important thing fob’s vary is decreased.
- The important thing fob’s LED mild is dim or would not come on in any respect.
