Mercedes C Class W205 HU Entry Navigation Repair
The new C Class W205 has a Mitsubishi head unit known as a HU Entry.
These have a smaller lcd display and the navigation data is on an sdcard in the armrest.
These units have started developing faults, most of the common faults are these units keep restarting or hanging on the logo.
Sometimes they can work for a few minutes and then restart again.
These new units are complicated and have alot of functions integrated.
Revtronic have seen alot of these units recently and are happy to say that we can successfully repair them. The mainboard will be inspected and better components will be replaced including any remedial work.
We have developed a full bench test rig in order to test and repair these without the need of your car.
All important data will be retained , so if you have DAB radio, reverse camera or other extras , rest assured that your Mercedes HU Entry will come back to you ready to plug and play.
- Published in Mercedes
Mercedes NTG2.5 W164 Reverse Camera Activation
Mercedes W164 ML fitted with a NTG2.5 required the activation and menu to be coded.
These units have the ability to display a camera image when put in reverse.
This requires special coding and activation procedures.
This is a permanent coding procedure and also adds the options in the menu system.
- Published in Mercedes
Mercedes A Class W176 Bi Xenon Retrofit And Coding
Got a Mercedes A Class W176 that had new bi xenon headlamps fitted which replaced the standard halogen lamps.
Once fitted the front lights do not work and flicker continuously.
We managed to rewire the SAM and code the car to work with bixenom headlamps.
If you are interested please call the office to discuss.
- Published in Mercedes
Mercedes C Class W205 Adblue Remaining Distance
Most modern Mercedes diesel cars have an adblue additive system that needs to get refilled after so many miles.
The indicator give a you sufficient warning to refill the adblue.
If you don’t get chance your remaining driving distance will be limited.
Eventually if you ignore it the car will not start.
We ensured that the adblue tank was topped up then we successfully reset the parameters and adapted the Mercedes adblue system to start the car again.
The actual remaining miles had expired , hence the car not starting.
- Published in Mercedes
Mercedes Electronic Steering Lock Problem W204/W207/W212
Mercedes Electronic Steering Lock Problem W204/W207/W212
Most Mercedes W204 C Class , W207 and W212 E Class can suffer from electronic steering lock problems such as :
- Ignition not turning on
- No display
- Instrument cluster not lighting
- Car does not start
- Steering lock does not release
- Mercedes Electronic Steering Lock Problem W204/W207/W212
- ESL faulty
Some fault codes can be :
- A22449 – The electronic ignition lock has a malfunction. There is an internal
electrical fault - A25407 – The electric steering lock has a malfunction. There is a mechanical
fault - A25408 – The electric steering lock malfunction. There is a signal fault or the
message is faulty - A25409 – The electric steering lock has a malfunction. There is a component
fault - A25464 – The electric steering lock has a malfunction. There is an implausible
signal
If you notice that you have to insert the key a few times for the steering to unlock , or if you here a clicking noise from the column then this is probably a sign that your electronic steering lock (ESL) is probably going to fail.
If your electronic steering lock completely fails then we can repair/replace this at a fraction of the cost compared to the main dealers.
If the car has to go to the dealers then they need at least 5 days to order the parts and can be very expensive. They will also need to order a special programming key which can take another 3-5 days to arrive.
We have new improved parts in stock and car work on your car same day.
An improved part is used that is more reliable and does not have a mechanical mechanism inside that can fail.
We will be able to extract the data needed to code and program an improved electronic steering lock (ESL) as we have all the latest technology needed for these cars.
In fact most new Mercedes do not have electronic steering locks due to the unreliability of the mechanical locks.
We will need the car here at our workshop , however we may be able to help you if you can send the keys , electronic ignition switch (EIS) and electronic steering lock (ESL).
Why not ask for a spare replacement key ?
- Published in Mercedes
Mercedes ML W166 Adlue Engine Start Not Possible
If you own a Mercedes ML W166 Adlue Engine Start Not Possible is written on the instrument cluster display then it means that you have driven past the safety start limit.
At this point the car will need to be towed to the dealers and alot of work needs to be done to program and reset this error.
If you have limited miles remaining , make sure you fill at least 20L of adblue which is readily available from most petrol stations then call us , bring the car to Revtronic and we will reset , relearn and program the adblue system back to normal.
- Published in Mercedes
Mercedes S Class W221 Spare Key
Got a Mercedes S Class W221 that needed a sapre key. These keys are only available from the dealer and can be expensive. We supplied and programmed the spare to work just like the original. All the buttons functioned correctly and the car started first time. 
- Published in Mercedes
Mercedes C Class W205 Led Headlamp Coding
If your led headlamp needs replacing then it will probably need online SCN coding.
If you fit a brand new or second-hand part it will not function correctly as the car data will need sychronising.
We have the specialist hardware that allows us to do online SCN coding.
- Published in Mercedes
Mercedes E Class W212 Anti Theft Pin Code
If your Mercedes E Class W212 Comand has failed and cannot be repaired then you will have to replace it.
You can buy a brand new one but will be very expensive.
If you buy a used one from a breaker then it will need coding and programming to match your vehicle.
As the car realises that the comand radio is not from this vehicle the anti theft will be activated.
So long as you can provide proof of purchase we can retrieve the code from Mercedes UK and sync back to your car. If you require your Comand coding please call us.
- Published in Mercedes
Mercedes E Class W211 third Brake light LED Strip Repair
We got a Mercedes E Class W211 third brake light LED strip faulty with partial leds illuminating.
The error was diagnosed as the rear light strip being faulty.
The third brake light was removed and the faulty components were identified and replaced.
Once repaired the Mercedes third brake light was working perfectly.
- Published in Mercedes
Mercedes E Class W211 SBC Brake Counter Reset
Mercedes E Class W211 SBC Brake Counter Reset
If you have brake error messages showing on your instrument cluster or if the diagnostic error code is showing C249F, then this can be repaired.
This can be done by having your vehicle at our workshop.
- Published in Mercedes
Mercedes 3 Button Key Shell Repair
We got this Mercedes 3 button key damaged with all the buttons not working.
The Mercedes 3 button key was refurbished , all buttons checked and re housed.
Call for information.
- Published in Mercedes