Repair and replacement of the contact group of the Daewoo Nexia ignition switch, how to check for problems

The car of the Korean manufacturer is popular among car enthusiasts. Daewoo Nexia is a convenient and practical vehicle for the city. But, unfortunately, there are no ideal cars; each has its own weak points. In Nexia, this is a group of contacts in the ignition switch. It often breaks down. In the article we will look at why the contact group burns, how to repair and replace, what to do to prevent the part from burning in the future?

2 Causes of burnout and symptoms of failure
3 How to check and make repairs
4 Eliminating the cause of burnout
4.1 Video: Replacing the contact group with the Daewoo Nexia

What does the ignition switch contact group look like?

This part is located in the ignition switch. When you turn the key, it is responsible for supplying current to the starter and providing power to other elements of the car: the radio, the heater fan. The Daewoo Nexia uses a design solution that, according to experts, can hardly be called successful.

Let's take a closer look at the contact group. Electrical contacts are placed in a plastic case made of two parts; they are switched depending on the position of the key.

The contact group in a Korean car often burns out due to an unsuccessful design decision

Nexia’s group has 5 conclusions:

“30”—power is supplied from the battery;
“15” - ignition circuit;
“15a” - heater fan circuit;
“50” — output to the starter;
“Ka” or “Kb” is the circuit of the original radio.

Replacing the ignition lock cylinder on a Daewoo Nexia - removal algorithm

/ Foreign cars /

It is very unpleasant when your favorite car presents unexpected surprises, for example, it refuses to start when the moment is not at all suitable. Such a nuisance can happen to you on the road and be completely unpredictable, because there may be no visible signs of malfunctions.

Car enthusiasts

We remove the connector from the contact group photo 6. Using a short and thin screwdriver we unscrew the fixing screw; it is located on the inside of the ignition switch, so access to it is limited to photos 7 and 8. As for me, having removed the contact group photo 9, I was convinced that it was all OK. The ignition switch contact group connector is not broken.

By inserting a screwdriver of the appropriate width into the connector and connecting the block with wires, I started the car without any problems. The cause of the breakdown, after removing the contact group, became obvious. Photo The shank of the ignition switch cylinder broke off. It is not difficult to pull out the cylinder, just use a wire with a pin with a diameter of mm, bent in the shape of an G; for this I used a hexagon, press the latch through the hole in photo 11 and at this time turn the key to the second position.

If everything is done correctly, the larva itself will come out of the body by 5 mm.

All you have to do is pull it out completely. Perhaps some will be struck by the idea, and not easier, to remove and replace the ignition switch completely, the cylinder with the housing!? Remove the steering column cover; Disconnect the connector through which power is supplied from the contact group; The ignition key is placed in position 2; Using a Phillips screwdriver, unscrew the screw securing the part; Remove the contact group from the lock body.

Sometimes, this requires prying it off with a screwdriver. Installation

A piece of the key is stuck in the ignition switch

Help people!!! The key in the ignition switch broke in half, half mine, half in the lock. The steering wheel is locked! How to remove the cylinder, provided that the cylinder does not rotate to the second position? How to remove the steering wheel lock, where is it located, how can it be disabled without a key? Tell me a way to remove the cylinder without removing the entire lock. Maybe it will be possible to insert plates on both sides of the secret plates in order to rotate the larva? please help, I'm sure someone else had the exact same situation. I searched the forum and found no answers to this question.

Nexia in the old body 16 valve

How to change the ignition lock cylinder of a Daewoo Matiz, Nexia

Installation is in the reverse order. This is what was done. If you did not take care of purchasing the necessary components in advance, then at this stage you can easily drive to the nearest automobile store or market and buy spare parts that require replacement.

Replacing the ignition lock cylinder. To change the ignition switch on your Daewoo Nexia yourself, you need to insert a new...

It involves transferring secretions from the old larva to the new one.

After inserting the key into the ignition and turning it all the way, I did not hear the sound of the starter operating. Pull out the cylinder, for this you will need a wire or pin with a suitable diameter, about mm, bend it at a right angle using a hexagon, and press through the hole onto the latch. This option is quite common and is the cheapest and fastest, but it will be necessary to carry two keys with you.

Using a Phillips screwdriver, unscrew the 8 screws securing the plastic steering column covers, see photos 1,2,3,4,5. Remove the two halves of the casing.

How to replace the Daewoo Nexia ignition switch with your own hands?

Disconnect the negative terminal from the battery. Use a Phillips screwdriver to remove the screws that secure the plastic covers to the steering column and remove the two halves.
Remove the connectors suitable for the contact group. Use a thin, short screwdriver to remove the retaining screw located on the inside of the ignition switch; note that its accessibility is limited.
The cause of the malfunction may be a breakage of the shank on the cylinder of the lock itself.
Pull out the cylinder, for this you will need a wire or pin with a suitable diameter, about 2-3 mm, bend it at a right angle using a hexagon, and press through the hole onto the latch. At the same time turn the key to the second position. If everything is done correctly, this will allow the larva to come out of the body by five millimeters on its own; all you have to do is remove it. It is not recommended to remove the ignition switch assembly with the cylinder, as this is a very labor-intensive process; you will have to remove the entire steering column to be able to get to its mounting bolts.
If you have not taken care of purchasing the necessary components in advance, then at this stage you can easily drive to the nearest automobile store or market and buy spare parts that require replacement. You can turn off the car using a contact group and a screwdriver.
As a rule, there are two ways to solve this problem.
In the first case, you can buy and replace only the ignition switch cylinder. This option is quite common and is the cheapest and fastest, but it will require you to always carry two keys with you, since the ignition key will be different from the key that opens the doors and trunk. In the second case, you can purchase a set of cylinders, which will include the cylinders of the ignition switch, trunk and front doors. The replacement process in this option will be more labor-intensive and will cost a little more, but you will have one key for everything. Which method to choose is up to you.
Assembly is carried out in reverse order.
Insert the new cylinder inside the ignition switch housing, together with the key in position 2, while simultaneously pressing the lock with wire. The most important thing is not to stumble upon a cheap Chinese counterfeit cylinder, because if you try to install it in the lock body, a problem will arise, you simply cannot do this, it will not fit there. The remaining options for larvae manufacturers are of quite high quality and can easily withstand replacement; they are installed the first time, just like factory ones.

Good to know…

If you want to save money and buy only the cylinder itself, and at the same time have only one key left, then there is another option that is useful to know about. It will consist in the interchangeability of secrets between the old and new ignition lock cylinder.

Turn the cylinder, or rather its inner part, until the lock stops, press it with a screwdriver and disengage it. Be very careful when performing this procedure as the retainer and spring may come loose and become lost. There is also a locking tab on the opposite side of the larva; you should also keep an eye on it and protect it from loss.
By analogy, it is necessary to take the same actions with a new larva.
Compare the sizes of the secrets with each other.
If the secrets are the same, you can start replacing them. Change each secret in turn and make sure not to confuse the location of each of them; if the position of at least one is incorrect, the cylinder key will no longer turn.
If the secretions of the new larva differ in size, then you will have to replace it using one of the methods described earlier.

Replacing the ignition switch on a Daewoo Nexia. It’s very simple

You can turn off the car using a contact group and a screwdriver. To do this, carefully remove it from the lock.

It is secured with a countersunk screw, which can be unscrewed from the ignition switch housing with a thin slotted screwdriver. We turn the contact group core and if the engine starts, we conclude that the larva is to blame. Insert a flathead screwdriver here and turn it. Articles The new Korean ignition lock cylinder KR received the article number S and costs within rubles.

The original set of cylinders for the doors, trunk lock and ignition switch costs about 3 thousand. If it doesn’t bother us that we will have one key for the door and trunk lock, and a second one for the ignition switch, we’ll spend rubles and put a new cylinder in place.

How to replace the ignition switch assembly yourself?

The installation location for the ignition switch is the steering column; it is secured with two bolts; to replace it, the column will need to be removed, and the bolts will have to be drilled out. A hammer and chisel will come in handy.

Remove the steering column from the car.
Unscrew the bolt securing the switch, strike the chisel tangentially with a hammer in a reverse clockwise direction.
Similarly, unscrew the second bolt and remove the ignition switch housing assembly.
Install the new lock in the reverse order; new bolts will be required; their tightening torque will be until the head is cut off.

How to replace the contact group on the Daewoo Nexia ignition switch with your own hands?

If a malfunction of the contact group is detected, then work to replace it will not require removing the ignition switch assembly. For the work you need two screwdrivers, a Phillips and a flathead.
Disconnect the negative terminal of the battery.
Remove the two screws that connect the two parts of the plastic steering column housing.
Use a screwdriver to remove the plug.
Remove the top column casing. Then, unscrew the 4 screws securing the lower casing, remove the rubber O-ring and remove it.
Disconnect the block with wiring harnesses, insert the key into the lock and set it to the second position.
Unscrew the screw to secure it.
Remove the contact group from the lock.
Installation of the contact group and other removed parts is carried out in the reverse order.

Causes of burnout and symptoms of breakdown

A strong current passes through the ignition switch. As a result, the wiring becomes very hot and the contacts melt. A large load occurs when the engine starts, the pin marked “30” suffers the most. First of all, it doesn’t hold up; the plastic case near the contact melts.

Due to the high current that passes through the group of contacts in the ignition switch, the contacts become very hot and the plastic housing melts

In most cases, burnout of the contact group manifests itself as follows: after turning the key in the lock, the starter does not turn. When driving, it manifests itself as follows: the engine suddenly stalls, the instrument panel goes dark and the smell of burnt plastic appears in the cabin . The second sign of a breakdown is a non-working standard radio.

It cannot be said that the starter does not spin and the car radio does not work only because of the contact group, but in 90% of cases for the Daewoo Nexia the symptoms are exactly the same.

Subtleties of replacing the ignition switch of Daewoo Nexia and Matiz in whole and in parts

On any car, the ignition switch is an important component; if it is not working, starting the engine will be impossible. If a motorist is faced with the problem of a non-working device, there can be no other way out than replacing the contact group of the ignition switch of a Daewoo Nexia car. In this article we will consider in detail the replacement process with all the nuances.

Before we talk about how to remove and change the ignition cylinder or contact group on the lock of a Daewoo Nexia and Matiz car, we will briefly consider a theoretical issue. The manufacturer Daewoo, whose vehicles are quite common among domestic consumers, labels the ignition switch as a mechanical locking element equipped with a contact group. As practice shows, this component breaks down quite often and requires repair; this information is confirmed by motorists in numerous reviews on the Internet.

New contact group on Daewoo Nexia

If there is a need to repair or replace the ignition switch, contact group or cylinder on the Nexia or Matiz models, it is not at all necessary to pay money for this at the service. You just need to remove the device and disassemble it, and you will find basic repair recommendations below. But before that, let's figure out what are the causes and signs of device malfunction.

Causes of failure

All reasons for the failure of the ignition switch on Daewoo Matiz and Nexia cars are conventionally divided into two groups - electrical and mechanical. One of the main electrical reasons why a contact group or cylinder requires replacement and repair is overloading of the elements. As a result of the fact that the car owner equips his vehicle with additional electrical appliances and devices that consume more power, a voltage passes through the contact group for which it was not originally designed.

Accordingly, for a certain time, the metal of the group can withstand high current, but subsequently the device begins to become covered with soot, and it usually forms on top of the contact, but inside. As a result, it may be impossible to clean the contact group; in fact, just like repairing it, all that remains is to change it.

In order to prevent overloading of this element, it is necessary to connect all additional equipment only through a relay. In this case, the current will not be able to overload the devices and the group contacts will be intact. But it should be noted that the failure of the contact group is not always caused by the actions of the motorist; sometimes it is simply a factory defect. This problem is more relevant for VAZ cars than for Daewoo Nexia and Matiz, but nevertheless, their starter contact sometimes burns out.

Nexia ignition contact group

Another reason why a car owner is faced with the need for repairs is a short circuit in the vehicle’s electrical circuit. Usually this rarely happens, but sometimes it happens that a large current damages the contacts of the group and the device fails.

In addition to electrical ones, there are also mechanical causes of breakdowns, which also require repair of Daewoo Nexia and Matiz. One of the main mechanical reasons is wear of the contact tracks or the group contacts themselves, which inevitably leads to the replacement of elements.

This problem occurs as a result of the aging of the device as a whole, this is quite normal and expected, but sometimes the reason may be low-quality metal.

In practice, the wear of the group tracks on Daewoo Nexia and Matiz cars was recorded after five months of their operation. That is, the metal elements of the device wore out so much during this time that grooves began to appear on them. The element as a whole ceases to function normally, and when disassembling the ignition switch, a whole handful of metal shavings will most likely be found in it. It is impossible to repair such a malfunction; you only need to remove the lock and replace the contact group as a whole.

Ignition lock cylinder with key

Mechanical faults also include the breakage of the contacts themselves or other components of the group. For example, on some domestically produced cars, the starter contact is made in the form of an iron tongue, so every time you start the engine, this contact extends on top of the other and bends. Over time, the element simply breaks off or will not be able to press against the fixed contact of the device.

The next cause of mechanical breakdowns can be called a violation of the design of the entire group as a result of the device heating up. If the ignition switch as a whole gets hot, then this indicates an overload, which we mentioned earlier. The device heats up as a result of the large current passing through it. If the group housing is of low quality and made of plastic, then as a result of overheating, the contact tracks may move slightly, and accordingly, they will subsequently break off.

Signs of failure

One of the main signs of a malfunction of the cylinder or contact group of the ignition switch is the simultaneous inoperability of many elements of the electrical equipment system. This occurs as a result of the fact that a certain energy consumer or even several are connected inside the device through each individual contact. For example, the ignition can be used to power the low and high beam lights, parking lights, turn signals, rear traffic lights, radio or interior lighting.

It can also be various electronic devices, such as parking sensors, navigator, video recorder, etc. If a certain contact through which power is transferred to consumers burns out, it will not be possible to start this or that equipment (the author of the video on how to replace the lock cylinder is PRO.Garage).

When several devices break down, which, as it may seem, are in no way connected with each other, the cause of the breakdown almost always lies in the cylinder or contact group of the ignition switch. Of course, electrical equipment on Daewoo Nexia and Matiz cars can also be connected to the fuse box, and then in the event of a breakdown, first of all you need to check the fuse itself. In any case, everything is individual here.

Having analyzed the principle of operation of the cylinder and the contact group of these cars, it is possible to identify other signs of their malfunction, which will lead to the need for repair:

Starter failure. When you try to start the engine of a Daewoo Nexia car, you will not even hear the relay click, neither the control nor the relay. The absence of clicks is due to the lack of voltage that passes through the contact group.
Failure of electricity consumers, which, as it may seem, are in no way connected with each other. But all these consumers always operate in the same key position in the lock.
Another sign is if the devices were not working, and then suddenly start turning on when you try to move the key in the lock. It should be noted that the key must be in one position. As you can guess, the elements of the contact group can come into contact with undamaged surfaces and current can pass through them, but not for long (the author of the video about replacing the device with your own hands is Territory House).

Eliminating the cause of burnout

It should be noted that replacing the contact group with a working one helps for a while. For high-quality repairs, it is necessary to eliminate the cause of burnout: reduce the current load on the contacts. You can strengthen the weak point of the Daewoo Nexia by installing additional relays according to the diagram:

When using two relays, the load on a group of contacts is halved

This method will help extend the service life of the contact group by more than 2 times. Anyone can improve the electrical ignition circuit of a Korean car.

Let's move on to practice: replacing the ignition switch cylinder

To change the cylinder, you need to purchase the corresponding mechanism of a certain article. Please note that you only need to buy original parts produced by the car manufacturer. If you buy a Chinese larva, there is a chance that it will not fit into the seat, since its size will be larger. In this case, you will have to grind the device, and this will take additional time.

The replacement procedure is performed as follows:

First of all, turn off the ignition and open the hood. Disconnect the terminals from the battery.
After this, using a Phillips screwdriver, you will need to remove the screws that secure the plastic steering wheel cover. By unscrewing the bolts, this cladding element can be dismantled.
Next, you will need to disconnect the connectors connected to the contact group of the device; they are secured with bolts. In this case, you will need two screwdrivers, one longer and one shorter. The screw itself that you need to unscrew is located inside the device.
Now you will need a wire, with its help you need to press on the cylinder mount through the existing hole, at the same time the ZZ must be moved to position 2. After this, you will be able to remove the larva by about 0.5 cm. Having done this, it can be completely dismantled.
When installing a new cylinder, make sure that the 3Z is in position 2. Using the pin, press the fastener and install the new structural element.

If you change the cylinder in the ignition switch, then you should also change the cylinders in the trunk lock and in the doors, otherwise you will not be able to open the door and trunk with the key to start the engine.

Photo gallery “Changing the larva with your own hands”

Article: 662276more, additional articles: 93741069hide

Order code: 713373

In stock Available for order – >10 pcs. Data updated: 05/29/2021 at 18:30

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Ignition switch contact group DAEWOO Nexia ERA Article: 662276, 93741069 Order code: 713373 531 ₽ or place an order by calling 8 800 6006 966

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General information about the Nexia ignition switch

The Daewoo Corporation, which is the manufacturer of the vehicle we are interested in, which is very popular among domestic drivers, designates the ignition switch (often called a switch) as a mechanical locking device equipped with an electrical contact group.

According to reviews from Nexia owners, this element rarely fails, but, of course, breakdowns do occur.

If the lock on your “swallow” has stopped responding to commands, it is not at all necessary to look for a car service where it will be put in order. Any malfunction can be eliminated independently by replacing the lock cylinder, its contact group or the entire switch assembly. In cases where a new lock assembly is being installed, the steering column must be removed.

The bolts that secure the element we are interested in need to be knocked out (put a chisel on the fastener and hit the tool tangentially with a hammer); pull out the released unit and install a new ignition switch in its place. The bolts, as you yourself understand, will have to be purchased new.

Installing a new contact group on the ignition switch

How to replace a contact group with your own hands:

First, open the hood and disconnect the battery.
Then, as in the case of the cylinder, you will need to unscrew the bolts securing the casing to the steering wheel. Remove and set it aside.
Now you will need a flat blade screwdriver. With its help, you need to disconnect the plug, and then dismantle the upper casing on the steering column.
Having done this, you can remove the O-ring, which is located on the lower casing. Before doing this, you will need to remove four bolts.
After this, you will need to disconnect the block with the wiring that is located on the plug. Having done this, you need to install the key in the 3Z and then turn the mechanism to position 2.
After completing these steps, you will need to unscrew the screw that secures the mechanism, after which you need to remove the contact group from the device. When the group is dismantled, a new one is installed. The assembly procedure is carried out in reverse order.

Analogue or original

The contact group for Daewoo Nexia goes under the code 530395 in the online store Exist.ru. You can also purchase an analogue consisting of 6 contacts (additional - “R”) under code number 93741069. The price is around 600 rubles.

The price of a new ignition switch complete with CG, but without a cylinder, ranges from 1650 to 2000 rubles. It all depends on the build. The larva is purchased separately. There are no analogues specifically for the Daewoo Nexia lock. Original numbers: GM 531318 and 530379, which are suitable for both old and new generation Nexia.

Ignition switch (housing) GM 531318 for Daewoo Nexia

Nexia: ignition switch, its design and installation

The movement of any car begins with the ignition switch. And if, when you insert and turn the key, nothing happens (the starter does not turn), then the contact group has burned out. Unfortunately, this is not uncommon for Nexia.

Replacing the contact group will solve the problem. The contact tends to melt under prolonged loads. This happens because an increased electric current passes through the contact responsible for power from the battery. Periodic replacement of the contact group will not bring much success. The best solution to a recurring problem would be to modify the electrical circuit, which will unload some of the current from one contact to the other.