What Causes Corrosion
Battery terminal corrosion is commonly seen as a white-blue or greenish powder that gathers around the positive- and negative-battery posts, well our CMH Renault Midrand Workshop Technicians suggest that corrosion is generally caused by hydrogen gas (which is released from the battery while charging), along with moisture and other salts / minerals in the atmosphere, all of which combine to create a corrosive environment. In many cases, it’s believed that the corrosion will typically form around the negative terminal, which suggests that the battery is “undercharging” due to a lack of adequate driving time. Corrosion around the positive terminal is generally believed to be the result of overcharging from the alternator. Either way, any form of battery terminal corrosion will eventually lead to poor conductivity, high electrical resistance, reduced lifespan, and ultimately the inability to deliver enough energy to start the engine.Overcharging
If your alternator is slightly overcharging your car battery, it might cause corrosion on your car battery terminals. Check your voltage with a multi-meter when your car runs to make sure it is not charging over 14.5 volts when you are revving the engine. It can also be because you are frequently charging your car battery with a car battery charger too hard.Overfilling the battery
If you overfill your car battery, it might cause the electrolyte to leak out, as mentioned before. Not all car batteries are refillable, but you should absolutely double-check if you have one so it is not overfilled.Hydrogen Gas Leakage
The battery turns acid into an electric current. There are moments that the hydrogen gas in the battery leaks and finds its way into the atmosphere. It reacts with other substances, and you get battery terminal corrosion. Depending on which side it forms, you can diagnose various battery problems. If it is on the negative terminal, this is a sign of undercharging, while if it is on the positive terminal, it is due to overcharging.
How To Prevent Battery Corrosion
Although some mechanics use grease or Vaseline to cover the battery’s terminals, our amazing of team of experts at our CMH Renault Workshop can guarantee you that these substances attract dirt. Needless to say, a gradual build-up of dirt and dust can also contribute to poor electrical contact. According to CRC Industries RSA (Pty) Ltd – trading as CRC & Q20 South Africa the correct product to use is CRC’S BATTERY TERMINAL PROTECTOR, which is one of a lead-free soft coating that’s specifically designed to protect battery terminals from corrosion.CRC’S BATTERY TERMINAL PROTECTOR does the following:
- Prolong battery life
- Guarantee successful charging and maintenance
- Assure easy starting
- Prevent corrosion
How To Apply:
- Shake can well before use
- Clean away existing corrosion with it/li>
- Apply an even coat to freshly cleaned hold-downs, bolts, brackets and terminals/li>
- For preventative maintenance: reapply when the red film turns clear/li>
CMH Renault Ballito in Association with Renault SA, held a Renault Chillas Event at TEN11 Braai House Stanger on the 5th of October 2019
It was a Saturday afternoon and what better activity could a petrol head wish for than spirited cars and cool sounds. It all started with a line-up, and what a formidable range of vehicles were selected for this event. Leading the pack was the eye-popping Renault Megane RS the road blistering rocket. Then it was the Renault Kwid, the Renault Clio, the Renault Captur and lastly the breath-taking Renault Koleos … It was like a full house or a royal flush.
TEN11 Braai House was our destination. The display was a massive success, and it was indeed an eventful Saturday, and had loads of activities. Customers were thrilled to test drive our beautiful range of vehicles. CMH Renault Ballito are Chillas kind of people and we always welcome the opportunity to show off our beautifully crafted cars. Contact Us today on 
We had an unbelievable performance day @ CMH RENAULT MIDRAND with our very own Renault Megane RS which allowed us to show off the pure power and automotive technology that is in the new Renault Megane RS.
The performance day was created with the purpose of showing the people a car that is extremely fast but still comfortable and elegantly charming. This vehicle turns heads everywhere you go with it’s sporty and muscular yet sleek and refined look. With performance pegged at the top of its category fuel economy still remains optimised.
The comfort features that come with the Megane RS are as follows:
• One touch windows with anti-trap feature for driver and passenger
• Engine:1,8 L – 205 kW / 390Nm
• Rear parking assist camera
• Renault “Hands free” key-card
• Monitor with full 3-D Race Telemetry with data download functionality
Renault has a whole range of performance cars from the Clio RS to the Megane RS however what makes the Megane RS special is the fact that it is not just a performance car but also performs in the sound department with an unbelievable sound system built in by Hatfield sound and security.
Visit us on cmhrenault.co.za for more information or contact us on 
On the weekend of 16th, CMH Renault Midrand had a very successful and entertaining Test Drive Day at our dealership. Customers were tickled with loud music, boerewors rolls and free Renault caps with every test drive completed throughout the day.
Our whole range of new Renault vehicles were ready to be driven as customers were flocking to the Dealership for our amazing event. Vehicle like the all new Renault- Kwid, Capture, Duster, Koloes, Clio IV, Megane and Sandero were available on the day which amazed our client base.
Please feel free to visit us for our future Test Drive Day’s to also test drive and experience all the Renault vehicles your heart desires. Follow us on our social media platforms (Facebook and Google Plus) to see what incredible specials we have in store for you and also to have a look at when our next big event will be.
CMH RENAULT MIDRAND showcased the best FESTIVE SPECIALS you can imagine on all the funkiest of Renault vehicles at Vodaworld. We offer a wide range of cashback or Christmas shopping vouchers on our new Renault Duster, Clio, Kwid, Megane and Capture models that can help you get your Christmas stockings filled up.
With many many more incredible Christmas deals in store and on show, CMH Renault Midrand is definitely the best place to buy your new Renault. For more information feel free to contact 
Ndumiso comes with years of experience in both the sales and motor industry. Ndumiso has been in the motor industry for 12 years. His career started as an evening sales executive which awarded him a seat in the sales cadet programme in the year 2007. In 2010, he was promoted to sales manager and has been exposed to various brands ever since. Ndumiso joined CMH Renault Midrand’s family in August of 2018 and he now leads a team of 4 brilliant sales executives who are looking forward to learning as much as possible from him as he passes his knowledge on to them.
Ndumiso is a self-motivated leader with very good inspirational qualities and is very persistent in reaching his targets. We are looking forward to build on a brighter future with him and his incredible team.
We have no doubt that he will excel in his new position and brand. Congratulations again Ndumiso, we look forward to delivering more cars with you.
Visit our dealership for greats specials. We are based at 145 New Road, Midrand or alternatively contact Ndumiso on 
During March every dealership played on your feelings to buy a vehicle before this massive increase enters into effect, but some of our client’s just had too many financial commitments to be able to take advantage of the opportunity. Now Renault, being the understanding and caring company that we are, have launched an initiative, first of its kind, for the month of April to give these people the opportunity to still miss the increase. We call it “VAT Boost”…
Renault will carry the cost of the VAT increase! That’s correct. If you buy a new Renault in April, we will take the extra 1% off the purchase price… This offer is valid on all our models, from the Kwid through to the luxury and sought-after Kadjar. Unfortunately, this 1% off is only valid on the purchase price of the vehicle, and not on any extras fitted.
So, if you are one of the unlucky few that missed the deadline, then you cannot afford to miss out on this opportunity. Swing by our dealership at 451 New Road in Midrand today, let us structure the best deal around for you, and get your VAT boosted.
