Our reliable Mercedes-Benz transmission control module mend or replace service
We know if you have a bad transmission control module, you need it put right safely and quickly.
Our technical know-how and large stock mean MercKeys can either fix your TCM so it’s as good as new or replace it the same day (in most cases), saving you time and money.
We offer a postal service too, so if you live outside the Auckland area you can still send the part to us by post, and we will return it to you as soon as possible.
Quality that’s second to none
The transmission control module is the brain of your Mercedes-Benz’s transmission, telling it when to change gears and how fast to go. It’s an essential component which is why our technicians are fully trained and we only source parts from reputable suppliers.
Understanding the Mercedes TCM/TCU System
Every part plays a crucial role when it comes to your Mercedes-Benz. One of the pivotal components ensuring your car's performance and safety is the Transmission Control Module (TCM) or Transmission Control Unit (TCU). This little unit oversees the operations of the transmission, ensuring smooth gear shifts, fuel efficiency, and the overall performance of your vehicle.
Why Mercedes TCM/TCU Tuning and Programming is Essential
Modern vehicles rely on software as much as they do on mechanical parts. To ensure your Mercedes-Benz runs optimally, periodic TCM or TCU tuning and programming is not just recommended but essential.
Engaging in Mercedes TCU tuning is more than just a technical exercise. It directly influences the vehicle's transmission, fine-tuning its operations to achieve heightened responsiveness and superior power delivery, resulting in a driving experience that's distinctly Mercedes.
Efficiency is the hallmark of a well-maintained vehicle. By undertaking correct Mercedes TCM programming, one ensures that the vehicle's transmission operates in the most fuel-conservative manner possible. This not only reduces fuel consumption but also minimises wear and tear on the engine.
Driving a vehicle without any hiccups or delays, especially in gear shifts, is crucial for a safe journey. Proper Mercedes TCU repair and Mercedes TCM repair ensure that there is seamless communication within the system, eliminating potential delays or miscommunications. This diligent maintenance and repair process heightens the overall safety and reliability of your Mercedes drive.Read Less
Some words from our happy customers
Being a Merc owner with a W202 97 C class c230, my old key was beginning to die a slow death until it packed up 2 days ago, at a shopping center. Not able to get back into the car, i asked the Merc dealership down the road to assist, and they told me a new key would cost 3900 and 3 weeks to arrive. With no such time on my hands, I found Merc keys and had such great customer service and assistance from them. 2 hours later my car was up and running with a new key. Thanks again.
What does a TCM do?
A transmission control module (or transmission control unit) is an electronic component typically used in automatic gearboxes to process information within the transmission.
How can I tell if my TCM is broken?
A major sign that your transmission control module may be faulty is if you’re having trouble accelerating or your Mercedes-Benz is slow to get up to speed.
Other indicators are if your vehicle gets stuck in neutral, jumps out of gear whilst you’re driving, or refuses to switch up or down gears.
This is generally accompanied by an increase in fuel consumption as the engine must work harder than usual, meaning a drop in fuel economy.
Is it essential to get my TCM fixed?
If you suspect a fault with your transmission control module, we recommend taking care of it as soon as possible. This will prevent further damage within the module, potentially saving you added expenses down the road. Also, there is a significant risk of it failing whilst you’re driving, affecting your ability to control the vehicle safely.
Our full guarantee
We're so confident of the quality of our electronic car and key repairs that we fully guarantee all our electronic parts and electrical repair work for one year.
Reach out to our team today.Read More
Common Signs You Need Mercedes TCU Repair or Mercedes TCM Repair
While Mercedes-Benz vehicles are built to last, like all electronic components, the TCM/TCU might require attention over time. Here are some signs indicating the need for Mercedes TCU repair or Mercedes TCM repair:
Irregular or Harsh Gear Shifts
If you notice your vehicle hesitating during gear shifts or if the shifts feel harder than usual, it could be a sign of a TCM/TCU issue.
If your transmission seems to change gears for no apparent reason or if you find it challenging to change gears, it's time to have your TCM/TCU checked.
Check Engine Light
While this can indicate a myriad of issues, it's often a sign that your TCM/TCU might be the root cause.
Reduced Fuel Efficiency
A malfunctioning TCM/TCU can lead to a decrease in kilometres per litre, costing you more at the pump.
What Sets Us Apart For Mercedes TCU/TCM Repair
Our highly skilled team has a special focus on Mercedes vehicles. Their deep-rooted knowledge and expertise ensure an unparalleled understanding of the TCM/TCU system, which is crucial for Mercedes TCM programming and Mercedes TCU tuning.
Advanced Diagnostic Tools
Prior to engaging in Mercedes TCU tuning or initiating any Mercedes TCM repair procedures, we employ cutting-edge diagnostic tools. This aids in accurately identifying any underlying issues, ensuring our services are both precise and efficient.
At MercKeys, quality is never compromised. When it comes to parts replacement, we steadfastly rely on genuine Mercedes-Benz parts, guaranteeing both compatibility with your vehicle and top-tier performance.
Our commitment to integrity means no hidden costs. We advocate for transparent communication, and our customers always receive a comprehensive breakdown of expenses before any work begins.
The heart of MercKeys lies in our bond with our customers. Whether it's a straightforward Mercedes TCM programming task or a more intricate Mercedes TCU repair, we approach each task with the utmost professionalism and diligence, always keeping our customers' best interests at heart.Read Less